Mental Reasoning MCQs

Reasoning

Mental Reasoning MCQs

Practice Mental Reasoning questions with answers and explanations for JKSSB, SSC, Railway, Banking, Police and UPSC exams.

316
Total Questions

Practice Questions

Page 1 of 16
Question #1
Find the missing term in the series: 2, 6, 12, 20, 30, ?
A. 44
B. 40
C. 42
D. 46
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Correct Answer: Option C

Explanation:
The pattern is n(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, so the next term is 6×7=42.
This question belongs to: Reasoning Mental Reasoning
Question #2
Find the missing term: 3, 8, 15, 24, 35, ?
A. 45
B. 46
C. 48
D. 50
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Correct Answer: Option C

Explanation:
The series follows n² - 1: 2²-1=3, 3²-1=8, 4²-1=15, 5²-1=24, 6²-1=35, so next is 7²-1=48.
This question belongs to: Reasoning Mental Reasoning
Question #3
Find the missing term: 5, 10, 20, 40, 80, ?
A. 160
B. 150
C. 140
D. 120
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Correct Answer: Option A

Explanation:
Each term is multiplied by 2: 5×2=10, 10×2=20, 20×2=40, 40×2=80, so next is 80×2=160.
This question belongs to: Reasoning Mental Reasoning
Question #4
Find the missing term: 1, 4, 9, 16, 25, ?
A. 35
B. 30
C. 49
D. 36
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Correct Answer: Option D

Explanation:
These are consecutive perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, so next is 6²=36.
This question belongs to: Reasoning Mental Reasoning
Question #5
Find the missing term: 2, 3, 5, 7, 11, ?
A. 12
B. 15
C. 17
D. 13
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Correct Answer: Option D

Explanation:
The series contains consecutive prime numbers: 2, 3, 5, 7, 11, and the next prime is 13.
This question belongs to: Reasoning Mental Reasoning
Question #6
Find the missing term: 1, 1, 2, 3, 5, 8, ?
A. 13
B. 12
C. 11
D. 10
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Correct Answer: Option A

Explanation:
This is the Fibonacci series where each term is the sum of the previous two: 5+8=13.
This question belongs to: Reasoning Mental Reasoning
Question #7
Find the missing term: 3, 6, 9, 12, 15, ?
A. 16
B. 20
C. 21
D. 18
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Correct Answer: Option D

Explanation:
The terms increase by 3 each time: 15+3=18.
This question belongs to: Reasoning Mental Reasoning
Question #8
Find the missing term: 100, 95, 85, 70, 50, ?
A. 30
B. 20
C. 35
D. 25
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Correct Answer: Option D

Explanation:
The differences are -5, -10, -15, -20, so the next difference is -25: 50-25=25.
This question belongs to: Reasoning Mental Reasoning
Question #9
Find the missing term: 2, 6, 18, 54, 162, ?
A. 486
B. 324
C. 504
D. 498
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Correct Answer: Option A

Explanation:
Each term is multiplied by 3: 162×3=486.
This question belongs to: Reasoning Mental Reasoning
Question #10
Find the missing term: 240, 120, 60, 30, ?
A. 20
B. 5
C. 10
D. 15
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Correct Answer: Option D

Explanation:
Each term is divided by 2: 30÷2=15.
This question belongs to: Reasoning Mental Reasoning
Question #11
Find the missing term: 4, 9, 16, 25, ?
A. 35
B. 49
C. 36
D. 30
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Correct Answer: Option C

Explanation:
The terms are 2², 3², 4², 5², so the next is 6²=36.
This question belongs to: Reasoning Mental Reasoning
Question #12
Find the missing term: 11, 13, 17, 19, 23, ?
A. 25
B. 27
C. 31
D. 29
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Correct Answer: Option D

Explanation:
These are consecutive prime numbers after 11: 11, 13, 17, 19, 23, and the next prime is 29.
This question belongs to: Reasoning Mental Reasoning
Question #13
Find the missing term: 0, 3, 8, 15, 24, ?
A. 35
B. 36
C. 33
D. 34
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Correct Answer: Option A

Explanation:
The series follows n²-1: 1²-1=0, 2²-1=3, 3²-1=8, 4²-1=15, 5²-1=24, so next is 6²-1=35.
This question belongs to: Reasoning Mental Reasoning
Question #14
Find the missing term: 2, 5, 10, 17, 26, ?
A. 36
B. 39
C. 35
D. 37
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Correct Answer: Option D

Explanation:
The terms follow n²+1: 1²+1=2, 2²+1=5, 3²+1=10, 4²+1=17, 5²+1=26, so next is 6²+1=37.
This question belongs to: Reasoning Mental Reasoning
Question #15
Find the missing term: 6, 11, 21, 36, 56, ?
A. 71
B. 81
C. 86
D. 76
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Correct Answer: Option B

Explanation:
Differences: +5, +10, +15, +20, so next difference is +25: 56+25=81.
This question belongs to: Reasoning Mental Reasoning
Question #16
Find the missing term: 7, 14, 28, 56, 112, ?
A. 168
B. 236
C. 244
D. 224
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Correct Answer: Option D

Explanation:
Each term is multiplied by 2: 112×2=224.
This question belongs to: Reasoning Mental Reasoning
Question #17
Find the missing term: 1, 8, 27, 64, ?
A. 100
B. 144
C. 121
D. 125
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Correct Answer: Option D

Explanation:
The terms are cubes: 1³=1, 2³=8, 3³=27, 4³=64, so next is 5³=125.
This question belongs to: Reasoning Mental Reasoning
Question #18
Find the missing term: 2, 4, 8, 16, 32, ?
A. 56
B. 64
C. 72
D. 48
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Correct Answer: Option B

Explanation:
Each term is double the previous term: 32×2=64.
This question belongs to: Reasoning Mental Reasoning
Question #19
Find the missing term: 1, 2, 4, 7, 11, ?
A. 14
B. 16
C. 15
D. 17
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Correct Answer: Option B

Explanation:
Differences: +1, +2, +3, +4, so next difference is +5: 11+5=16.
This question belongs to: Reasoning Mental Reasoning
Question #20
Find the missing term: 1, 3, 7, 15, 31, ?
A. 65
B. 63
C. 64
D. 62
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Correct Answer: Option B

Explanation:
Each term is double plus 1: 1×2+1=3, 3×2+1=7, 7×2+1=15, 15×2+1=31, so next is 31×2+1=63.
This question belongs to: Reasoning Mental Reasoning

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