Mental Reasoning MCQs with Answers for JKSSB, SSC & Railway

Question #221

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CAT : DDY :: DOG : ?

A. EPH

B. ERL

C. FSM

D. EQM

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Correct Answer: Option B

Explanation:
C+1=D, A+3=D, T+5=Y. Similarly, D+1=E, O+3=R, G+5=L, so DOG becomes ERL.

This question belongs to: Reasoning Mental Reasoning

Question #222

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6 : 222 :: 8 : ?

A. 512

B. 510

C. 528

D. 520

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Correct Answer: Option D

Explanation:
The relation is n^3 + n. 6^3 + 6 = 216 + 6 = 222; 8^3 + 8 = 512 + 8 = 520.

This question belongs to: Reasoning Mental Reasoning

Question #223

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3 : 27 :: 4 : ?

A. 64

B. 32

C. 60

D. 48

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Correct Answer: Option A

Explanation:
The relation is n^3. 3^3 = 27; therefore 4^3 = 64.

This question belongs to: Reasoning Mental Reasoning

Question #224

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11 : 1210 :: 12 : ?

A. 1584

B. 1716

C. 1728

D. 1440

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Correct Answer: Option A

Explanation:
The relation is n^2(n-1). 11^2 × 10 = 1210; 12^2 × 11 = 144 × 11 = 1584.

This question belongs to: Reasoning Mental Reasoning

Question #225

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36 : 9 :: 64 : ?

A. 24

B. 16

C. 32

D. 8

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Correct Answer: Option B

Explanation:
The relation is number ÷ 4. 36 ÷ 4 = 9; 64 ÷ 4 = 16.

This question belongs to: Reasoning Mental Reasoning

Question #226

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7 : 56 :: 9 : ?

A. 72

B. 88

C. 90

D. 81

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Correct Answer: Option C

Explanation:
The relation is n(n+1). 7 × 8 = 56; 9 × 10 = 90.

This question belongs to: Reasoning Mental Reasoning

Question #227

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5 : 125 :: 6 : ?

A. 256

B. 216

C. 180

D. 196

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Correct Answer: Option B

Explanation:
The relation is n^3. 5^3 = 125; 6^3 = 216.

This question belongs to: Reasoning Mental Reasoning

Question #228

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18 : 54 :: 24 : ?

A. 84

B. 60

C. 72

D. 48

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Correct Answer: Option C

Explanation:
The relation is n × 3. 18 × 3 = 54; 24 × 3 = 72.

This question belongs to: Reasoning Mental Reasoning

Question #229

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Find the next term: 2, 6, 12, 20, 30, ?

A. 44

B. 40

C. 46

D. 42

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Correct Answer: Option D

Explanation:
Differences are 4, 6, 8, 10, 12. So next term = 30 + 12 = 42.

This question belongs to: Reasoning Mental Reasoning

Question #230

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Find the next term: 1, 1, 2, 3, 5, 8, ?

A. 14

B. 11

C. 12

D. 13

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Correct Answer: Option D

Explanation:
This is the Fibonacci series. Next term = 5 + 8 = 13.

This question belongs to: Reasoning Mental Reasoning

Question #231

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Find the next term: 3, 5, 9, 17, 33, ?

A. 64

B. 66

C. 65

D. 63

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Correct Answer: Option C

Explanation:
Differences are 2, 4, 8, 16, 32. Next term = 33 + 32 = 65.

This question belongs to: Reasoning Mental Reasoning

Question #232

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Find the next term: 2, 3, 5, 7, 11, 13, ?

A. 23

B. 15

C. 17

D. 19

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Correct Answer: Option C

Explanation:
The series consists of consecutive prime numbers. The next prime after 13 is 17.

This question belongs to: Reasoning Mental Reasoning

Question #233

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Find the next term: 1, 4, 9, 16, 25, ?

A. 42

B. 49

C. 30

D. 36

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Correct Answer: Option D

Explanation:
The terms are squares of natural numbers: 1,2,3,4,5. Next term = 6^2 = 36.

This question belongs to: Reasoning Mental Reasoning

Question #234

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Find the next term: 5, 10, 20, 40, 80, ?

A. 140

B. 120

C. 100

D. 160

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Correct Answer: Option D

Explanation:
Each term is multiplied by 2. Next term = 80 × 2 = 160.

This question belongs to: Reasoning Mental Reasoning

Question #235

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Find the next term: 100, 81, 64, 49, 36, ?

A. 25

B. 28

C. 27

D. 30

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Correct Answer: Option A

Explanation:
The terms are squares descending: 10^2, 9^2, 8^2, 7^2, 6^2. Next term = 5^2 = 25.

This question belongs to: Reasoning Mental Reasoning

Question #236

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Find the next term: 2, 5, 10, 17, 26, ?

A. 36

B. 35

C. 37

D. 39

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Correct Answer: Option C

Explanation:
Differences are 3, 5, 7, 9, 11. Next term = 26 + 11 = 37.

This question belongs to: Reasoning Mental Reasoning

Question #237

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Find the next term: 1, 8, 27, 64, 125, ?

A. 196

B. 256

C. 343

D. 216

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Correct Answer: Option D

Explanation:
The terms are cubes of natural numbers: 1^3, 2^3, 3^3, 4^3, 5^3. Next term = 6^3 = 216.

This question belongs to: Reasoning Mental Reasoning

Question #238

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Find the next term: A, C, F, J, O, ?

A. U

B. V

C. T

D. W

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Correct Answer: Option A

Explanation:
Gaps increase by 1: A to C (+2), C to F (+3), F to J (+4), J to O (+5). Next gap +6: O + 6 = U.

This question belongs to: Reasoning Mental Reasoning

Question #239

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Find the next term: Z, X, V, T, R, ?

A. N

B. O

C. Q

D. P

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Correct Answer: Option D

Explanation:
Each letter moves 2 places backward. R - 2 = P.

This question belongs to: Reasoning Mental Reasoning

Question #240

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Find the next term: 3, 6, 18, 72, 360, ?

A. 1800

B. 2520

C. 2880

D. 2160

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Correct Answer: Option D

Explanation:
The multiplying factors are 2, 3, 4, 5, 6. Next term = 360 × 6 = 2160.

This question belongs to: Reasoning Mental Reasoning

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