Logical Reasoning MCQs

Reasoning

Logical Reasoning MCQs

Solve Logical Reasoning MCQs with detailed explanations for JKSSB, SSC, Railway, Banking, UPSC and all competitive exams.

441
Total Questions

Practice Questions

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Question #41
Find the next number in the series: 1, 3, 7, 15, 31, ?
A. 63
B. 64
C. 65
D. 62
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Correct Answer: Option A

Explanation:
Pattern: double and add 1. 31×2+1=63.
This question belongs to: Reasoning Logical Reasoning
Question #42
Find the next number in the series: 5, 11, 23, 47, ?
A. 97
B. 95
C. 93
D. 99
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Correct Answer: Option B

Explanation:
Pattern: double and add 1. 47×2+1=95.
This question belongs to: Reasoning Logical Reasoning
Question #43
Find the next number in the series: 2, 6, 12, 20, 30, 42, ?
A. 60
B. 56
C. 52
D. 50
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Correct Answer: Option B

Explanation:
Differences are +4, +6, +8, +10, +12; next difference is +14. 42+14=56.
This question belongs to: Reasoning Logical Reasoning
Question #44
Find the next number in the series: 0, 3, 8, 15, 24, ?
A. 32
B. 36
C. 30
D. 35
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Correct Answer: Option D

Explanation:
Series is n²−1: 1²−1=0, 2²−1=3, 3²−1=8, 4²−1=15, 5²−1=24; next 6²−1=35.
This question belongs to: Reasoning Logical Reasoning
Question #45
Find the next number in the series: 2, 4, 8, 16, 32, 64, ?
A. 96
B. 256
C. 128
D. 144
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Correct Answer: Option C

Explanation:
Each term is multiplied by 2. 64×2=128.
This question belongs to: Reasoning Logical Reasoning
Question #46
Find the next number in the series: 6, 11, 21, 36, 56, ?
A. 86
B. 91
C. 81
D. 76
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Correct Answer: Option C

Explanation:
Differences are +5, +10, +15, +20; next difference is +25. 56+25=81.
This question belongs to: Reasoning Logical Reasoning
Question #47
Find the next number in the series: 1, 2, 6, 24, 120, ?
A. 840
B. 640
C. 720
D. 600
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Correct Answer: Option C

Explanation:
Multipliers are 2, 3, 4, 5; next multiplier is 6. 120×6=720.
This question belongs to: Reasoning Logical Reasoning
Question #48
Find the next number in the series: 3, 9, 27, 81, ?
A. 180
B. 216
C. 162
D. 243
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Correct Answer: Option D

Explanation:
Each term is multiplied by 3. 81×3=243.
This question belongs to: Reasoning Logical Reasoning
Question #49
Choose the odd one out: 27, 64, 100, 125
A. 64
B. 100
C. 125
D. 27
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Correct Answer: Option B

Explanation:
27, 64 and 125 are perfect cubes; 100 is not a perfect cube.
This question belongs to: Reasoning Logical Reasoning
Question #50
If PEN = 35, then INK = ?
A. 30
B. 34
C. 32
D. 36
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Correct Answer: Option B

Explanation:
PEN = 16+5+14 = 35. INK = 9+14+11 = 34.
This question belongs to: Reasoning Logical Reasoning
Question #51
If RAT is coded as SBU, then CAT is coded as ?
A. DBT
B. CBU
C. DAV
D. DBU
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Correct Answer: Option D

Explanation:
Each letter is shifted one place forward: C→D, A→B, T→U = DBU.
This question belongs to: Reasoning Logical Reasoning
Question #52
If APPLE is coded as BQQMF, then MANGO is coded as ?
A. MBOHP
B. NBOHN
C. NBOHP
D. NBPHQ
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Correct Answer: Option C

Explanation:
Each letter is shifted one place forward: M→N, A→B, N→O, G→H, O→P = NBOHP.
This question belongs to: Reasoning Logical Reasoning
Question #53
If DELHI is coded as CDKGH, then LUCKNOW is coded as ?
A. KUBJMNV
B. KTBJMNV
C. KTBJMNW
D. KTBJNMV
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Correct Answer: Option B

Explanation:
Each letter is shifted one place backward: L→K, U→T, C→B, K→J, N→M, O→N, W→V = KTBJMNV.
This question belongs to: Reasoning Logical Reasoning
Question #54
If TABLE is coded as UBCMF, then CHAIR is coded as ?
A. DIBJR
B. DIBJS
C. DHBJS
D. DIBSJ
Discuss
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Correct Answer: Option B

Explanation:
Each letter is shifted one place forward: C→D, H→I, A→B, I→J, R→S = DIBJS.
This question belongs to: Reasoning Logical Reasoning
Question #55
If SUN is coded as TVO, then MOON is coded as ?
A. NQQP
B. NPOP
C. NOPP
D. NPPO
Discuss
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Correct Answer: Option D

Explanation:
Each letter is shifted one place forward: M→N, O→P, O→P, N→O = NPPO.
This question belongs to: Reasoning Logical Reasoning
Question #56
If LOGIC is coded as MPHJD, then THINK is coded as ?
A. UIJOL
B. UJJOM
C. UIJPL
D. UIKOL
Discuss
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Correct Answer: Option A

Explanation:
Each letter is shifted one place forward: T→U, H→I, I→J, N→O, K→L = UIJOL.
This question belongs to: Reasoning Logical Reasoning
Question #57
If COLD is coded as EPMF, then HOT is coded as ?
A. JPU
B. JQV
C. IQV
D. JQW
Discuss
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Correct Answer: Option B

Explanation:
Each letter is shifted two places forward: H→J, O→Q, T→V = JQV.
This question belongs to: Reasoning Logical Reasoning
Question #58
If JAM is coded as LCO, then TEA is coded as ?
A. WHD
B. VGC
C. VGB
D. UFC
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Correct Answer: Option B

Explanation:
Each letter is shifted two places forward: T→V, E→G, A→C = VGC.
This question belongs to: Reasoning Logical Reasoning
Question #59
A is B's brother. C is A's father. D is C's sister. How is D related to B?
A. Paternal aunt
B. Mother
C. Maternal aunt
D. Sister
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Correct Answer: Option A

Explanation:
C is father of both A and B. D is C's sister, so D is B's paternal aunt.
This question belongs to: Reasoning Logical Reasoning
Question #60
A and B are brothers. C is A's mother. D is C's father. E is D's son. How is E related to B?
A. Brother
B. Grandfather
C. Maternal uncle
D. Paternal uncle
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Correct Answer: Option C

Explanation:
C is mother of A and B. D is C's father, so E, being D's son, is C's brother and B's maternal uncle.
This question belongs to: Reasoning Logical Reasoning

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