Logical Reasoning MCQs

Reasoning

Logical Reasoning MCQs

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

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Question #21
Find the next number in the series: 2, 6, 12, 20, 30, ?
A. 46
B. 42
C. 40
D. 44

Correct Answer: Option B


Explanation:
Differences are +4, +6, +8, +10; next difference is +12. 30+12=42.

This question belongs to: Reasoning Logical Reasoning
Question #22
Choose the odd one out: Ear, Nose, Eye, Hand
A. Nose
B. Eye
C. Hand
D. Ear

Correct Answer: Option C


Explanation:
Ear, nose and eye are sensory organs; hand is not primarily a sensory organ.

This question belongs to: Reasoning Logical Reasoning
Question #23
Find the next number in the series: 1, 4, 9, 16, 25, ?
A. 36
B. 30
C. 35
D. 49

Correct Answer: Option A


Explanation:
The series is of squares: 1², 2², 3², 4², 5²; next is 6²=36.

This question belongs to: Reasoning Logical Reasoning
Question #24
Odometer is to Distance as Barometer is to ______.
A. Pressure
B. Rain
C. Humidity
D. Temperature

Correct Answer: Option A


Explanation:
An odometer measures distance; a barometer measures atmospheric pressure.

This question belongs to: Reasoning Logical Reasoning
Question #25
11 is to 121 as 13 is to ______.
A. 156
B. 144
C. 169
D. 196

Correct Answer: Option C


Explanation:
121 is the square of 11; similarly, 13² = 169.

This question belongs to: Reasoning Logical Reasoning
Question #26
Fish is to Aquarium as Bird is to ______.
A. Aviary
B. Cage
C. Zoo
D. Nest

Correct Answer: Option A


Explanation:
Fish are kept in an aquarium; birds are kept in an aviary.

This question belongs to: Reasoning Logical Reasoning
Question #27
Polygon is to Perimeter as Circle is to ______.
A. Circumference
B. Diameter
C. Area
D. Radius

Correct Answer: Option A


Explanation:
Perimeter is the boundary length of a polygon; circumference is the boundary length of a circle.

This question belongs to: Reasoning Logical Reasoning
Question #28
Book is to Library as Data is to ______.
A. File
B. Internet
C. Server
D. Database

Correct Answer: Option D


Explanation:
Books are stored in a library; data is stored in a database.

This question belongs to: Reasoning Logical Reasoning
Question #29
Pen is to Write as Spade is to ______.
A. Dig
B. Water
C. Cut
D. Plant

Correct Answer: Option A


Explanation:
A pen is used for writing; a spade is used for digging.

This question belongs to: Reasoning Logical Reasoning
Question #30
Choose the odd one out: January, March, July, September
A. March
B. September
C. January
D. July

Correct Answer: Option B


Explanation:
January, March and July have 31 days; September has 30 days.

This question belongs to: Reasoning Logical Reasoning
Question #31
Find the next number in the series: 2, 3, 5, 8, 13, ?
A. 18
B. 20
C. 21
D. 24

Correct Answer: Option C


Explanation:
Each term is the sum of the previous two terms: 8+13=21.

This question belongs to: Reasoning Logical Reasoning
Question #32
Find the next number in the series: 5, 10, 20, 40, ?
A. 70
B. 60
C. 100
D. 80

Correct Answer: Option D


Explanation:
Each term is multiplied by 2. 40×2=80.

This question belongs to: Reasoning Logical Reasoning
Question #33
Find the next number in the series: 7, 13, 25, 49, ?
A. 99
B. 91
C. 95
D. 97

Correct Answer: Option D


Explanation:
Pattern: double and subtract 1. 7×2−1=13; 13×2−1=25; 25×2−1=49; 49×2−1=97.

This question belongs to: Reasoning Logical Reasoning
Question #34
Find the next number in the series: 3, 6, 18, 72, ?
A. 360
B. 288
C. 216
D. 324

Correct Answer: Option A


Explanation:
Multipliers are 2, 3, 4; next multiplier is 5. 72×5=360.

This question belongs to: Reasoning Logical Reasoning
Question #35
Find the next number in the series: 100, 95, 85, 70, ?
A. 55
B. 45
C. 40
D. 50

Correct Answer: Option D


Explanation:
Subtractions are 5, 10, 15; next subtraction is 20. 70−20=50.

This question belongs to: Reasoning Logical Reasoning
Question #36
Find the next term in the series: AZ, BY, CX, DW, ?
A. EU
B. EW
C. DU
D. EV

Correct Answer: Option D


Explanation:
First letters increase A, B, C, D, E; second letters decrease Z, Y, X, W, V.

This question belongs to: Reasoning Logical Reasoning
Question #37
Find the next number in the series: 2, 5, 10, 17, 26, ?
A. 41
B. 37
C. 39
D. 35

Correct Answer: Option B


Explanation:
Differences are +3, +5, +7, +9; next difference is +11. 26+11=37.

This question belongs to: Reasoning Logical Reasoning
Question #38
Find the next number in the series: 121, 144, 169, 196, ?
A. 225
B. 256
C. 289
D. 216

Correct Answer: Option A


Explanation:
The series is 11², 12², 13², 14²; next is 15²=225.

This question belongs to: Reasoning Logical Reasoning
Question #39
Find the next number in the series: 1, 8, 27, 64, 125, ?
A. 196
B. 216
C. 343
D. 225

Correct Answer: Option B


Explanation:
The series is 1³, 2³, 3³, 4³, 5³; next is 6³=216.

This question belongs to: Reasoning Logical Reasoning
Question #40
Find the next number in the series: 64, 32, 16, 8, ?
A. 6
B. 4
C. 1
D. 2

Correct Answer: Option B


Explanation:
Each term is divided by 2. 8÷2=4.

This question belongs to: Reasoning Logical Reasoning