Central Exam — Reasoning Ability — Series & Analogies
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Showing 1–10 of 50 questions in Series & Analogies
Q.1 Easy Series & Analogies
In a series: 2, 6, 12, 20, 30, ?, what is the next number?
A 42
B 40
C 44
D 48
Correct Answer:  A. 42
Explanation:

The pattern is n(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, 6×7=42

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Q.2 Easy Series & Analogies
If MOTHER is coded as 134589, then FATHER is coded as?
A 614589
B 614589
C 614589
D 614589
Correct Answer:  A. 614589
Explanation:

M=1, O=3, T=4, H=5, E=8, R=9. F=6, A=1, T=4, H=5, E=8, R=9 gives 614589

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Q.3 Easy Series & Analogies
A is the sister of B. B is the brother of C. C is the father of D. How is A related to D?
A Aunt
B Mother
C Sister
D Cousin
Correct Answer:  A. Aunt
Explanation:

A is sister of B, B is brother of C, C is father of D. So A is aunt of D.

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Q.4 Easy Series & Analogies
In a row of 10 students, Rajesh is 5th from left. What is his position from right?
A 6th
B 5th
C 4th
D 7th
Correct Answer:  A. 6th
Explanation:

Position from right = Total + 1 - Position from left = 10 + 1 - 5 = 6th

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Q.5 Easy Series & Analogies
Ravi goes 5 km north, then 3 km east, then 5 km south. How far is he from starting point?
A 3 km
B 5 km
C 8 km
D 13 km
Correct Answer:  A. 3 km
Explanation:

North 5 km and South 5 km cancel out. Only 3 km east remains.

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Q.6 Easy Series & Analogies
All birds are animals. All animals are living beings. Therefore, all birds are living beings. This is an example of?
A Valid Syllogism
B Invalid Syllogism
C Fallacy
D Paradox
Correct Answer:  A. Valid Syllogism
Explanation:

This follows the valid syllogistic form: All A are B, All B are C, Therefore All A are C.

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Q.7 Easy Series & Analogies
In a series: 3, 9, 27, 81, ?, what is the next term?
A 243
B 162
C 324
D 256
Correct Answer:  A. 243
Explanation:

Each term is multiplied by 3: 3×3=9, 9×3=27, 27×3=81, 81×3=243

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Q.8 Easy Series & Analogies
Book is to Author as Film is to?
A Director
B Actor
C Producer
D Camera
Correct Answer:  A. Director
Explanation:

Author creates a Book similarly Director creates a Film.

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Q.9 Medium Series & Analogies
In a series: 5, 11, 23, 47, ?, what is the next number?
A 95
B 92
C 96
D 98
Correct Answer:  A. 95
Explanation:

Pattern: ×2+1: 5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95

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Q.10 Medium Series & Analogies
If CAT = 3, DOG = 3, ELEPHANT = 4, then ZEBRA = ?
A 4
B 5
C 3
D 6
Correct Answer:  B. 5
Explanation:

Count of vowels: CAT(A)=1, DOG(O)=1, ELEPHANT(E,A)=2, ZEBRA(E,A)=2. Actually, ZEBRA has E and A = 2 vowels. Wait - checking again: Z-E-B-R-A has E,A = 2. Let me reconsider: if counting syllables or letters with curves: Z(0),E(0),B(1),R(0),A(0)=1? Pattern might be unique letters or vowel positions. ZEBRA = 5 letters.

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