Find the missing term: 6, 9, 15, 21, 33, ? MCQ with Answer and Explanation

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Find the missing term: 6, 9, 15, 21, 33, ?

A. 51

B. 39

C. 45

D. 42

Answer: Option B

Solution (By JKSSB Mock Tests)

These are products of 3 and consecutive primes: 2×3=6, 3×3=9, 5×3=15, 7×3=21, 11×3=33, so next is 13×3=39.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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A, B, C, D and E are five friends. A is shorter than B but taller than E. C is the tallest. D is shorter than B but taller than A. Who is the second tallest?

A. D

B. E

C. B

D. A

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Correct Answer: Option C

Explanation:
C tallest. Then B > D > A > E. So second tallest is B.

This question belongs to: Reasoning Mental Reasoning

Question #2

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Find the missing term: 2, 3, 6, 11, 18, ?

A. 27

B. 26

C. 28

D. 25

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Correct Answer: Option A

Explanation:
Differences are +1, +3, +5, +7, so next difference is +9: 18+9=27.

This question belongs to: Reasoning Mental Reasoning

Question #3

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Which Venn diagram best represents Fruits, Apples and Oranges?

A. Three intersecting circles

B. One circle inside another circle only

C. Two non-intersecting small circles inside a larger circle

D. Three separate circles

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Correct Answer: Option C

Explanation:
Apples and Oranges are distinct subcategories of Fruits, so both are shown as non-intersecting circles inside the larger Fruits circle.

This question belongs to: Reasoning Mental Reasoning

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