Close Menu
IndiaFolks
  • Class 6
    • MCQ Questions Class 6 Science
    • MCQ Questions for Class 6 Social Science
  • Class 7
    • MCQ Questions for Class 7 Science
    • MCQ Questions for Class 7 Social Science
    • MCQ Questions for Class 7 Maths
    • Class 7 Maths Worksheets
  • Class 8
    • NCERT Solutions for Class 8 Maths
    • MCQ Questions Class 8 History
    • MCQ Questions Class 8 Geography
    • MCQ Questions Class 8 Science
  • Class 9
    • MCQ Questions for Class 9 Social Science
    • MCQ Questions for Class 9 Science
    • MCQ Questions for Class 9 Maths
  • Class 10
    • MCQ Questions for Class 10 Geography
    • MCQ Questions for Class 10 History
    • MCQ Questions for Class 10 Political Science
    • Worksheet Class 10 Maths
  • Maths
    • Maths Quiz for Class 4 to 10
    • Calculator
  • About India
  • MAT
    • Mental Ability Test Questions
    • General Knowledge
      • Hindi GK
      • English GK
    • Aptitude Question and Answers
IndiaFolks
  • Class 6
    • MCQ Questions Class 6 Science
    • MCQ Questions for Class 6 Social Science
  • Class 7
    • MCQ Questions for Class 7 Science
    • MCQ Questions for Class 7 Social Science
    • MCQ Questions for Class 7 Maths
    • Class 7 Maths Worksheets
  • Class 8
    • NCERT Solutions for Class 8 Maths
    • MCQ Questions Class 8 History
    • MCQ Questions Class 8 Geography
    • MCQ Questions Class 8 Science
  • Class 9
    • MCQ Questions for Class 9 Social Science
    • MCQ Questions for Class 9 Science
    • MCQ Questions for Class 9 Maths
  • Class 10
    • MCQ Questions for Class 10 Geography
    • MCQ Questions for Class 10 History
    • MCQ Questions for Class 10 Political Science
    • Worksheet Class 10 Maths
  • Maths
    • Maths Quiz for Class 4 to 10
    • Calculator
  • About India
  • MAT
    • Mental Ability Test Questions
    • General Knowledge
      • Hindi GK
      • English GK
    • Aptitude Question and Answers
IndiaFolks
Home»MAT»100 Mental Ability & Reasoning Questions for Class 6 (Grade 6) with Answers
MAT

100 Mental Ability & Reasoning Questions for Class 6 (Grade 6) with Answers

Updated:August 24, 202624 Mins Read

Introducing 100 mental ability test questions with answers for class 6 students, inspired by the NTSE exam format. This set doubles as a reasoning and logical reasoning worksheet for class 6, covering number series, coding-decoding, analogies, maths reasoning, and spatial reasoning. The questions are carefully curated to balance ease and challenge the young minds. It aims to challenge young minds with straightforward and few demanding questions. This list is a starting point and can act as an ideal tool to nurture the cognitive skills of sixth graders (grade 6). It offers them a taste of both simplicity and complexity in problem-solving.

Mental Ability Test Questions with Answers for Class 6

List of 100 Mental Ability Test Questions with Answers for Grade 6

Number Series and Pattern Questions

Question 1. Which number comes next in the sequence: 2, 4, 8, 16, …?

a) 24
b) 32
c) 18
d) 30

Answer:

b) 32 — The sequence is doubling each time. (2×2=4, 4×2=8, 8×2=16, so 16×2=32).

Question 2. If 1 * 2 = 22, 2 * 3 = 36, 3 * 4 = 412, what is 4 * 5?

a) 420
b) 45
c) 520
d) 54

Answer:

c) 520 — The pattern is to write the second number and then the product of both numbers (2 and 1*2=2 form 22, 3 and 2*3=6 form 36, 4 and 3*4=12 form 412; so 5 and 4*5=20 form 520).

Question 3. Which number should replace the question mark in the following series: 2, 6, 12, 20, ?, 42

a) 30
b) 32
c) 28
d) 35

Answer:

a) 30 — The series is increasing by consecutive even numbers. The differences are 4, 6, 8, etc. So, 20 + 10 = 30.

Question 4. Find the missing number: 8, 13, 20, ?, 40, 53

a) 28
b) 29
c) 30
d) 31

Answer:

b) 29 — The sequence increases by 5, 7, 9, 11, etc. So, 20 + 9 = 29.

Question 5. Complete the series: 11, 22, 33, 44, 55, ?

a) 66
b) 77
c) 88
d) 99

Answer:

a) 66 — The series consists of consecutive numbers repeated twice (11, 22, 33, etc.).

Question 6. What number replaces the question mark in the following sequence: 3, 8, 15, 24, 35, ?

a) 48
b) 46
c) 49
d) 50

Answer:

a) 48 — The pattern is adding 5, 7, 9, 11, 13, etc., to the previous number.

Question 7. If 5 * 9 = 2054 and 7 * 6 = 3024, then what is 8 * 4?

a) 4054
b) 5043
c) 4023
d) 4032

Answer:

c) 4023 — The pattern involves reversing the digits of the product and placing the first number at the end (5×9=45, reverse to 54, add 20; 7×6=42, reverse to 24, add 30).

Question 8. If 2 * 3 = 8, 4 * 5 = 22, 6 * 7 = 44, then what is 8 * 9?

a) 56
b) 74
c) 64
d) 80

Answer:

d) 74 — The pattern is the multiplication of the two numbers plus 2 (2*3+2=8, 4*5+2=22, 6*7+2=44, so 8*9+2=74).

Question 9. What is the next number in the series: 5, 10, 15, 20, …?

a) 22
b) 25
c) 28
d) 30

Answer:

b) 25 — The series increases by 5 each time (5, 10, 15, 20, so the next is 20 + 5 = 25).

Letter and Alphabet Series Questions

Question 10. What comes next in the pattern: A, C, F, J, …?

a) N
b) O
c) P
d) Q

Answer:

b) O — The pattern follows the sequence of adding 1, 2, 3, 4, etc., to the position of the letter in the alphabet (A+1=B, C+2=E, F+3=I, J+4=O).

Question 11. Complete the series: ABZ, BCY, CDX, ?

Options:
a) DEW
b) EFV
c) EFW
d) DFW

Answer:

a) DEW — The series is a sequence where each letter in the group moves one step forward and the last letter moves one step backward in the alphabet.

Question 12. Complete the series: Z, U, Q, ?, I

a) L
b) M
c) N
d) O

Answer:

b) M — The series is skipping 4, 3, 2, 1 letters (Z, Y, X, W, V, U; U, T, S, R, Q; Q, P, O, N, M).

Question 13. What comes next in the series: SCD, TEF, UGH, ?, WKL

a) CMN
b) UJI
c) VIJ
d) IJT

Answer:

c) VIJ — The series follows a pattern where each letter in the word moves one, two, and two steps forward respectively.

Question 14. Fill in the missing letters: a_c_e_g_?

Options:
a) bdfh
b) bdgh
c) bdfi
d) bdgi

Answer:

a) bdfh — The letters are in alphabetical order with one letter skipped each time.

Question 15. Fill in the missing letters: _abc_a_bc_ab_

Options:
a) bcaac
b) acbac
c) bacab
d) cbaab

Answer:

b) acbac — The pattern is a cyclic repetition of ‘abc’.

Question 16. Find the missing letters: J_KMN_O_?

Options:
a) KLOP
b) LLOP
c) KLMO
d) KLLP

Answer:

a) KLOP — The letters are in alphabetical order, with one letter skipped each time.

Question 17. Complete the series: ZYX, WVU, TSR, ?

Options:
a) QPO
b) QPN
c) QPM
d) QPL

Answer:

a) QPO — The series is a sequence of reverse alphabets in groups of three, skipping one letter each time.

Question 18. Find the missing letters: _b_cd_bc_d_

Options:
a) acbb
b) abcc
c) bacc
d) bbca

Answer:

d) bbca — The letters alternate between ‘b’ and ‘c’, starting with ‘b’.

Question 19. Complete the sequence: BDF, HJL, NPR, ?

Options:
a) TVX
b) TUX
c) SUV
d) STV

Answer:

a) TVX — Each group skips one letter and then two letters alternately.

Question 20. Fill in the blanks: a_b_c_bca_?

Options:
a) cbab
b) acba
c) baca
d) abcb

Answer:

c) baca — The letters form a repeating pattern of ‘abc’.

Coding-Decoding Questions

Question 21. If CAT is coded as 3120, how will DOG be coded?

a) 4157
b) 5147
c) 4175
d) 1574

Answer:

a) 4157 — Each letter is represented by its position in the alphabet. C(3), A(1), T(20); similarly, D(4), O(15), G(7).

Question 22. If PENCIL is written as LICNEP, how is TIGER written?

a) IETRG
b) TGIRE
c) REGIT
d) IGTER

Answer:

c) REGIT — Just reverse the letters.

Question 23. If ‘RED’ is coded as ’27’, what will be the code for ‘GREEN’?

a) 57
b) 65
c) 41
d) 49

Answer:

d) 49 — R is the 18th letter of the alphabet. E is the 5th letter of the alphabet. D is the 4th letter of the alphabet.
If we add the numbers of the corresponding letters, we get 18 + 5 + 4 = 27. Do the same with Green

Question 24. If WATER is coded as YCVGT, then how is BREAD coded?

a) DTGCF
b) CSFCU
c) DSFCB
d) ESFDU

Answer:

a) DTGCF — Each letter is replaced by the next two letters in the alphabet (W→Y, A→C, etc.).

Question 25. In a certain code, 15789 is written as AEGIJ. How is 23456 written in that code?

a) BCDEF
b) BDFHJ
c) CEGIK
d) BDFGI

Answer:

a) BCDEF — Each number is coded as the letter in its alphabetical position (1=A, 2=B, 3=C, etc.).

Question 26. If MANGO is coded as 13141715 and APPLE as 11616125, how is GRAPE coded?

a) 7181165
b) 8175165
c) 7186157
d) 8176159

Answer:

a) 7181165 — Each letter is represented by its position in the alphabet (G=7, R=18, A=1, P=16, E=5).

Question 27. If SOAP is written as 1915116, how is RAIN written?

a) 9214
b) 18291
c) 18912
d) 181914

Answer:

d) 181914 — Each letter is represented by its position in the alphabet backward (S=19, O=15, A=1, P=16).

Question 28. If RATION is coded as 123456, how is RATIO coded?

a) 12345
b) 12356
c) 12456
d) 12346

Answer:

a) 12345 — Each letter corresponds to a number (R=1, A=2, T=3, I=4, O=5).

Question 29. In a certain code, TRIANGLE is written as SQHZMFKD. How is CIRCLE written in that code?

a) BHQBKD
b) DHBKJD
c) BHKDJD
d) DBJKSB

Answer:

a) BHQBKD — Each letter is replaced by the previous letter in the alphabet.

Question 30. If in a certain language, MADRAS is coded as NBESBT, how is BOMBAY coded in that language?

a) CPNCBX
b) CPNCBZ
c) CPOCBZ
d) CPNDBZ

Answer:

b) CPNCBZ — Each letter in the word is moved one step forward to form the code.

Question 31. In a code, ‘256’ means ‘flower red bloom’, ‘265’ means ‘flower bloom red’, and ‘356’ means ‘beautiful red rose’. What digit in the code stands for ‘red’?

a) 2
b) 5
c) 6
d) 3

Answer:

b) 5 — ‘Red’ is the common word in ‘256’ and ‘265’, thus represented by 5.

Question 32. In a certain code, if ‘DOG’ is written as ‘EPI’, how is ‘CAT’ written?

a) DBU
b) DBV
c) DBW
d) DBX

Answer:

b) DBV — Each letter is shifted one place forward in the alphabet.

Analogy Questions

Question 33. If RED is related to BLOOD, then GREEN is related to?

a) SKY
b) GRASS
c) SUN
d) FLOWER

Answer:

b) GRASS — Green is commonly associated with grass, just as red is associated with blood.

Question 34. If ‘MOUSE’ is related to ‘COMPUTER’, then ‘BOOK’ is related to?

a) LIBRARY
b) PAPER
c) READING
d) SHELF

Answer:

a) LIBRARY — A book is commonly found in a library, as a mouse is with a computer.

Question 35. If Monday is to January, then Wednesday is to?

a) March
b) May
c) July
d) August

Answer:

a) March — Both Monday and January are the first in their categories (week and year), Wednesday and March are the third.

Question 36. If a square is to a cube, then a circle is to:

a) Sphere
b) Cylinder
c) Cone
d) Triangle

Answer:

a) Sphere — A square is a 2D shape, and a cube is its 3D counterpart. Similarly, a circle is 2D, and a sphere is its 3D counterpart.

Odd One Out (Classification) Questions

Question 37. Find the odd one out: 81, 64, 49, 36, 28

a) 81
b) 64
c) 49
d) 28

Answer:

d) 28 — All others are perfect squares (9², 8², 7², 6²), but 28 is not.

Question 38. Which number is the odd one out: 2, 3, 6, 7, 8, 14, 15, 25?

a) 2
b) 8
c) 14
d) 30

Answer:

b) 8 — All numbers except 8 are either prime or products of two primes.

Question 39. Which number is different from the rest: 124, 215, 327, 438, ?

a) 121
b) 211
c) 323
d) 551

Answer:

d) 551 — In all other numbers, the third digit is less than the sum of the first two digits.

Question 40. Find the group that is different:

a) EGIK
b) FHJL
c) BDFH
d) ACDF
e) JLNP

Answer:

d) ACDF — All others are sequences of letters with equal intervals, except ACDF.

Question 41. Find the group that is different:

a) XZBF
b) RUTW
c) KMOQ
d) GIKM
e) PSVX

Answer:

b) RUTW — All others follow a sequence with equal intervals between each letter, RUTW does not.

Question 42. Find the odd one out:

a) ZABY
b) VEWU
c) QJSR
d) NOLM
e) TGFH

Answer:

e) TGFH — In all others, the first and last letters are consecutive, but not in TGFH.

Question 43. Find the group that is different:

a) OQST
b) EGIK
c) UWXZ
d) ACDF
e) JLNP

Answer:

a) OQST — All others are sequences of letters with equal intervals, OQST is not in equal interval.

Question 44. Find the odd one out:

a) BDFH
b) KMNP
c) RTVX
d) PSVX
e) EGJL

Answer:

d) PSVX — In all others, each letter is two steps from the next

Question 45. Find the group that is different:

a) JLNQ
b) DGJM
c) TWXZ
d) CEHG
e) BDFI

Answer:

d) CEHG — In all other groups, there is a consistent two-letter interval between each letter, but in CEHG the intervals vary.

Question 46. Find the odd one out:

a) NOPQ
b) YZAB
c) VWXY
d) CDEF
e) STUV

Answer:

c) YZAB — All others are sequences starting from the beginning of the alphabet, but YZAB starts from the end.

Question 47. Find the odd one out:

a) AEIM
b) BFJN
c) CGKO
d) DHLP
e) EJOT

Answer:

e) EJOT — In all other groups, each letter is one step apart in the alphabet, but in EJOT, the letters are not in a consistent one-step sequence.

Question 48. Which word does not belong in the group?

a) Apple
b) Banana
c) Orange
d) Carrot

Answer:

d) Carrot — Carrot is a vegetable, while the others are fruits.

Question 49. Which of the following does not fit in the series?

a) 5
b) 10
c) 15
d) 12

Answer:

d) 12 — All other numbers are multiples of 5.

Question 50. Identify the odd one out:

a) Triangle
b) Square
c) Rectangle
d) Circle

Answer:

d) Circle — The other shapes have straight sides, while a circle does not.

Spatial and Non-Verbal Reasoning Questions

Question 51. Which of the following shapes will look the same when rotated 180 degrees?

a) Square
b) Triangle
c) Circle
d) Rectangle

Answer:

c) Circle — A circle looks the same after being rotated.

Question 52. How many faces does a rectangular prism have?

a) 4
b) 6
c) 8
d) 12

Answer:

b) 6 — A rectangular prism has 6 faces.

Question 53. If you cut a cube into 8 smaller cubes of equal size, how many edges does each smaller cube have?

a) 4
b) 6
c) 8
d) 12

Answer:

c) 8 — Each smaller cube has 8 edges.

Question 54. Which 3D shape can be made from the following 2D shape?

a) Sphere
b) Cylinder
c) Cone
d) Cube

Answer:

b) Cylinder — The 2D shape can be rolled to form a cylinder.

Question 55. How many vertices does a triangular prism have?

a) 4
b) 5
c) 6
d) 8

Answer:

c) 6 — A triangular prism has 6 vertices.

Question 56. If you unfold a cube, how many squares will you get?

a) 4
b) 5
c) 6
d) 8

Answer:

c) 6 — A cube unfolds into 6 squares.

Question 57. Which of the following shapes has the same number of sides as a hexagon?

a) Pentagon
b) Square
c) Octagon
d) None of the above

Answer:

d) None of the above — A hexagon has 6 sides, which none of the other shapes have.

Mathematical Reasoning Questions

Question 58. A clock shows 3:15. What is the angle between the hour and the minute hands?

a) 0°
b) 7.5°
c) 90°
d) 37.5°

Answer:

b) 7.5° — At 3:15

Question 59. What is the sum of the angles of a triangle?

a) 180 degrees
b) 90 degrees
c) 360 degrees
d) 270 degrees

Answer:

a) 180 degrees — The sum of the angles in any triangle is always 180 degrees.

Question 60. If a train travels 60 km in 1 hour, how far will it travel in 3.5 hours?

a) 180 km
b) 200 km
c) 210 km
d) 220 km

Answer:

c) 210 km — The train travels 60 km per hour, so in 3.5 hours it will travel 60 × 3.5 = 210 km.

Question 61. A rectangle has a length of 8 cm and a width of 5 cm. What is its perimeter?

a) 26 cm
b) 30 cm
c) 40 cm
d) 45 cm

Answer:

b) 26 cm — Perimeter of a rectangle is 2 × (length + width) = 2 × (8 + 5) = 26 cm.

Question 62. If the sum of two numbers is 30 and one of the numbers is 12, what is the other number?

a) 15
b) 18
c) 12
d) 20

Answer:

b) 18 — The other number is 30 – 12 = 18.

Question 63. If 5 notebooks cost ₹75, what is the cost of 8 notebooks?

a) ₹100
b) ₹120
c) ₹125
d) ₹150

Answer:

b) ₹120 — The cost of one notebook is ₹75 ÷ 5 = ₹15, so the cost of 8 notebooks is 8 × ₹15 = ₹120.

Question 64. If a book has 240 pages and you read 30 pages every day, how many days will it take to finish the book?

a) 6
b) 7
c) 8
d) 9

Answer:

c) 8 — It will take 240 ÷ 30 = 8 days to finish the book.

Question 65. The product of two numbers is 64 and one of the numbers is 8. What is the other number?

a) 6
b) 7
c) 8
d) 9

Answer:

c) 8 — The other number is 64 ÷ 8 = 8.

Question 66. What is the average of these numbers: 6, 8, 10, 12?

a) 8
b) 9
c) 10
d) 11

Answer:

c) 9 — The average is (6 + 8 + 10 + 12) ÷ 4 = 36 ÷ 4 = 9.

Question 67. If the area of a square is 49 square cm, what is the length of one side?

a) 5 cm
b) 6 cm
c) 7 cm
d) 8 cm

Answer:

c) 7 cm — The side length of a square is the square root of the area, √49 = 7 cm.

Question 68. A box contains 20 red balls and 30 blue balls. What is the ratio of red balls to blue balls?

a) 2:3
b) 1:1
c) 2:5
d) 3:5

Answer:

a) 2:3 — The ratio of red balls to blue balls is 20:30, which simplifies to 2:3.

Logical Reasoning and Puzzle Questions

Question 69. In a row of trees, a tree is 7th from either end of the row. How many trees are there in the row?

a) 13
b) 14
c) 15
d) 12

Answer:

a) 13 — If the tree is 7th from either end, there are 6 trees on each side of it, making a total of 6+6+1=13 trees.

Question 70. Rohan moves 5 km east, then turns left and moves 4 km, and finally turns left again and moves 5 km. In which direction is he facing now?

a) East
b) West
c) North
d) South

Answer:

d) South — Rohan is facing south after completing the movements.

Question 71. A family has 6 sons and each son has one sister. How many people are in the family?

a) 8
b) 13
c) 7
d) 14

Answer:

c) 7 — There are 6 sons, and 1 daughter (6 sons share the same sister).

Question 72. Arrange the words in a logical order: Leaf, Tree, Branch, Seed, Fruit

a) Seed, Tree, Branch, Leaf, Fruit
b) Seed, Leaf, Tree, Branch
c) Seed, Branch, Leaf, Tree, Fruit
d) Seed, Tree, Leaf, Branch, Fruit

Answer:

a) Seed, Tree, Branch, Leaf, Fruit — The logical order of growth and development of a tree.

Question 73. Four friends are sitting in a row. A is not at either end. B is not next to C. Who is sitting in the middle?

a) A
b) B
c) C
d) D

Answer:

a) A — Since A is not at either end and B is not next to C, A must be in the middle.

Question 74. If John is taller than Jack and Jack is taller than Jim, who is the shortest?

a) John
b) Jack
c) Jim
d) Cannot be determined

Answer:

c) Jim — Since John is taller than Jack and Jack is taller than Jim, Jim is the shortest.

Question 75. Three brothers are 12, 14, and 16 years old. The youngest is:

a) 14 years old
b) 16 years old
c) 12 years old
d) None of the above

Answer:

c) 12 years old — The youngest brother is 12 years old.

Logical Deduction (Syllogism) Questions

Question 76. If all cats are animals and some animals are pets, are all cats pets?

a) Yes
b) No
c) Cannot be determined
d) Sometimes

Answer:

b) No — Not all animals are pets, so not all cats are pets.

Question 77. If it is raining, then the ground is wet. It is not raining. Therefore:

a) The ground is wet
b) The ground is not wet
c) The ground may or may not be wet
d) None of the above

Answer:

c) The ground may or may not be wet — The statement only tells us what happens if it rains, not what happens if it doesn’t.

Question 78. If all apples are fruits and all fruits are nutritious, which of the following is true?

a) All apples are nutritious
b) Some apples are not nutritious
c) No apples are nutritious
d) Apples are not fruits

Answer:

a) All apples are nutritious — If all apples are fruits and all fruits are nutritious, then it follows that all apples are nutritious.

Question 79. If all pencils are pens and some pens are blue, which of the following must be true?

a) All pencils are blue
b) Some pencils are blue
c) No pencils are blue
d) Cannot be determined

Answer:

b) Some pencils are blue — Since all pencils are pens and some pens are blue, it follows that some pencils are blue.

Question 80. If it rains, the ground gets wet. If the ground is wet, it is slippery. It is raining. What can be deduced?

a) The ground is not wet
b) The ground is slippery
c) It is not slippery
d) The ground is dry

Answer:

b) The ground is slippery — Since it is raining, the ground gets wet, and if the ground is wet, it becomes slippery.

Question 81. All birds have wings. Some birds can fly. Which of the following is true?

a) All birds can fly
b) Some birds do not have wings
c) Some birds cannot fly
d) No birds can fly

Answer:

c) Some birds cannot fly — Since only some birds can fly, it follows that some birds cannot fly, even though all birds have wings.

Question 82. If all mammals breathe air and all dogs are mammals, which of the following must be true?

a) Some dogs do not breathe air
b) All dogs breathe air
c) No dogs are mammals
d) Dogs do not need air

Answer:

b) All dogs breathe air — Since all mammals breathe air and all dogs are mammals, it follows that all dogs breathe air.

Question 83. If all cars have wheels and some vehicles are cars, which of the following must be true?

a) All vehicles have wheels
b) Some vehicles have wheels
c) No vehicles have wheels
d) All vehicles are cars

Answer:

b) Some vehicles have wheels — Since some vehicles are cars and all cars have wheels, it follows that some vehicles have wheels.

Question 84. If all musicians play instruments and John is a musician, which of the following is true?

a) John does not play an instrument
b) John plays an instrument
c) John cannot be a musician
d) John plays all instruments

Answer:

b) John plays an instrument — Since all musicians play instruments and John is a musician, it follows that John plays an instrument.

Question 85. If it snows, the roads are slippery. The roads are not slippery. What can be deduced?

a) It is snowing
b) It is not snowing
c) The roads are icy
d) It is raining

Answer:

b) It is not snowing — If it were snowing, the roads would be slippery. Since the roads are not slippery, it follows that it is not snowing.

Question 86. All flowers bloom in the spring. Roses are flowers. What can be concluded?

a) Roses bloom in the spring
b) Roses do not bloom
c) Some roses bloom in the winter
d) Roses are not flowers

Answer:

a) Roses bloom in the spring — Since all flowers bloom in the spring and roses are flowers, it follows that roses bloom in the spring.

Question 87. If all humans need oxygen to live and Mary is a human, which of the following is true?

a) Mary does not need oxygen
b) Mary needs oxygen to live
c) Mary is not a human
d) Mary can live without oxygen

Answer:

b) Mary needs oxygen to live — Since all humans need oxygen to live and Mary is a human, it follows that Mary needs oxygen to live.

Blood Relation (Family Tree) Questions

Question 88. Pointing to a man, Riya said, “He is the son of my grandfather’s only child.” How is the man related to Riya?

a) Father
b) Brother
c) Uncle
d) Cousin

Answer:

b) Brother — Riya’s grandfather’s only child is her father, so the man (that child’s son) is Riya’s brother.

Question 89. A is B’s father. B is C’s brother. How is A related to C?

a) Father
b) Brother
c) Uncle
d) Grandfather

Answer:

a) Father — B and C are siblings, so C’s father is also A.

Question 90. Meena is the daughter of Rahul. Rahul is the son of Suresh. How is Suresh related to Meena?

a) Father
b) Uncle
c) Grandfather
d) Brother

Answer:

c) Grandfather — Suresh is Rahul’s father, and Rahul is Meena’s father, so Suresh is Meena’s grandfather.

Question 91. Pointing to a woman, Karan said, “She is the mother of my father.” How is the woman related to Karan?

a) Mother
b) Aunt
c) Sister
d) Grandmother

Answer:

d) Grandmother — The mother of Karan’s father is his grandmother.

Question 92. P is the brother of Q. Q is the sister of R. How is P related to R?

a) Brother
b) Sister
c) Father
d) Uncle

Answer:

a) Brother — P, Q, and R are siblings, and since P is male, P is R’s brother.

Question 93. Sita is the wife of Mohan. Mohan is the father of Rohit. How is Sita related to Rohit?

a) Sister
b) Mother
c) Aunt
d) Grandmother

Answer:

b) Mother — Sita is married to Rohit’s father, so she is Rohit’s mother.

Question 94. Amit said, “This girl is the daughter of the only son of my mother.” How is the girl related to Amit?

a) Sister
b) Niece
c) Daughter
d) Cousin

Answer:

c) Daughter — The only son of Amit’s mother is Amit himself, so the girl is his daughter.

Question 95. Ravi is the son of Anil’s father’s sister. How is Ravi related to Anil?

a) Brother
b) Uncle
c) Cousin
d) Nephew

Answer:

c) Cousin — Anil’s father’s sister is Anil’s aunt, so her son Ravi is Anil’s cousin.

Question 96. A woman introduces a boy as the son of the only daughter of her father. How is the boy related to the woman?

a) Son
b) Nephew
c) Brother
d) Cousin

Answer:

a) Son — The only daughter of her father is the woman herself, so the boy is her son.

Question 97. X is the mother of Y. Y is the mother of Z. Z is the brother of W. How is X related to W?

a) Mother
b) Grandmother
c) Aunt
d) Sister

Answer:

b) Grandmother — Z and W are children of Y, and X is Y’s mother, so X is the grandmother of W.

Question 98. Introducing a man, a lady said, “His mother is the only daughter of my mother.” How is the lady related to the man?

a) Sister
b) Aunt
c) Mother
d) Grandmother

Answer:

c) Mother — The only daughter of the lady’s mother is the lady herself, so she is the man’s mother.

Question 99. Deepak is the brother of Ravi. Kavita is the sister of Ravi. How is Deepak related to Kavita?

a) Brother
b) Father
c) Cousin
d) Uncle

Answer:

a) Brother — Deepak, Ravi, and Kavita are siblings, and since Deepak is male, he is Kavita’s brother.

Question 100. Pointing to a photograph, a man said, “I have no brother or sister, but that man’s father is my father’s son.” Whose photograph was it?

a) His son
b) His father
c) His own
d) His nephew

Answer:

a) His son — Since the man has no siblings, “my father’s son” is the man himself, so that man’s father is him — meaning the photograph is of his son.

Mental Ability Test for Other Classes

  • Mental Ability Test Questions for Class 4
  • Mental Ability Test Questions for Class 5
  • Mental Ability Test Questions for Class 7
  • Mental Ability Test Questions for Class 8
  • Mental Ability Test Questions for Class 10
Previous Article100 Mental Ability Test Questions with Answers for Class 7
Next Article 80 Mental Ability Test Questions with Answers for Class 8
Amit
  • LinkedIn

Amit holds a BE in Mechanical Engineering and brings a genuine passion for mathematics to IndiaFolks. He creates NCERT-aligned content for students from Classes 4 to 10. He specialises in breaking down tricky concepts into clear, step-by-step solutions, from worksheets and MCQs to aptitude problems. He makes the tough problems easier for Indian students to build confidence and score better in Maths. His goal is simple: turn every student into a problem-solver who actually enjoys the subject.

Related Posts

80 Mental Ability Test Questions with Answers for Class 8

25 Mins Read

100 Mental Ability Test Questions with Answers for Class 7

27 Mins Read

75 Mental Ability Test Questions for Class 5 with Answers

21 Mins Read

3 Comments

  1. Shritama Roy on August 30, 2025 7:40 am

    Nice

    Reply
  2. Pingback: 100 Mental Ability Test Questions with Answers for Class 7

  3. Pingback: 80 Mental Ability Test Questions with Answers for Class 8

Leave A Reply Cancel Reply

Recent Posts

80 Mental Ability Test Questions with Answers for Class 8

August 27, 2026

100 Mental Ability Test Questions with Answers for Class 7

August 27, 2026

100 Mental Ability & Reasoning Questions for Class 6 (Grade 6) with Answers

August 24, 2026

75 Mental Ability Test Questions for Class 5 with Answers

August 23, 2026
© 2026 Indiafolks.com

Type above and press Enter to search. Press Esc to cancel.