Find the missing term: 3, 6, 9, 12, 15, ? MCQ with Answer and Explanation

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Find the missing term: 3, 6, 9, 12, 15, ?

A. 21

B. 20

C. 16

D. 18

Answer: Option D

Solution (By JKSSB Mock Tests)

The terms increase by 3 each time: 15+3=18.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Find the next term: 5, 11, 23, 47, 95, ?

A. 189

B. 183

C. 191

D. 185

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Correct Answer: Option C

Explanation:
Pattern: multiply by 2 and add 1. 95 × 2 + 1 = 191.

This question belongs to: Reasoning Mental Reasoning

Question #2

If ORANGE is coded as 15-18-1-14-7-5, how is BANANA coded?

A. 2-1-14-2-14-1

B. 2-1-13-1-14-1

C. 2-1-14-1-14-1

D. 3-1-14-1-14-1

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Correct Answer: Option C

Explanation:
The code uses alphabet positions: B=2, A=1, N=14, A=1, N=14, A=1.

This question belongs to: Reasoning Mental Reasoning

Question #3

What should come next in the following letter series? A A B A B C A B C D A B C D E A B C D

A. A

B. C

C. B

D. E

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Correct Answer: Option D

Explanation:
The series is A, AB, ABC, ABCD, ABCDE, ABCDEF... So after A B C D the next group starts with A B C D E, so next letter is E.

This question belongs to: Reasoning Mental Reasoning

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