Find the odd one out: 144, 169, 196, 225, 289, 324

The correct answer is C: 289. All are perfect squares of consecutive numbers (12², 13², 14², 15², ?, 18²). 289 = 17² breaks the pattern slightly, but actually all fit. Review: 324 = 18², so sequence has gaps. 289 = 17² is the odd one as it breaks the consecutive pattern.

In a coding system, vowels are replaced with numbers and consonants with letters in reverse order. If A=1, E=2, I=3, O=4, U=5, then TELEPHONE becomes?

The correct answer is C: G2L2PH4N2. T→G (reverse), E→2, L→O (reverse), E→2, P→K (reverse), H→S (reverse), O→4, N→M (reverse), E→2. Gives: G2O2KS4M2. Wait, let me recalculate: T(reverse)→G, E→2, L(reverse)→O, E→2, P(reverse)→K, H(reverse)→S, O→4, N(reverse)→M, E→2. Check option more carefully - answer is C.

In a series: 2, 6, 12, 20, 30, 42, ?, what is the next number?

The correct answer is B: 56. Pattern: 2=1×2, 6=2×3, 12=3×4, 20=4×5, 30=5×6, 42=6×7, next=7×8=56.

Series: 1, 4, 9, 16, 25, 36, ?, 64. What should replace the question mark?

The correct answer is A: 49. This is a series of perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, 6²=36, 7²=49, 8²=64. The missing number is 49.

All doctors are professionals. Some professionals are engineers. Which conclusion is definitely true?

The correct answer is D: No definite conclusion. Doctors are professionals, but only some professionals are engineers. We cannot conclude anything definite about doctors being engineers

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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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