Find the next number in the series: 6, 11, 21, 36, 56, ? MCQ with Answer and Explanation

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Find the next number in the series: 6, 11, 21, 36, 56, ?

A. 86

B. 91

C. 81

D. 76

Answer: Option C

Solution (By JKSSB Mock Tests)

Differences are +5, +10, +15, +20; next difference is +25. 56+25=81.

This question belongs to: Reasoning Logical Reasoning

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Practice More Logical Reasoning Questions

Question #1

Find the next term: 3, 8, 18, 38, 78, ?

A. 158

B. 160

C. 162

D. 164

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Correct Answer: Option A

Explanation:
3×2+2=8, 8×2+2=18, 18×2+2=38, 38×2+2=78, 78×2+2=158.

This question belongs to: Reasoning Logical Reasoning

Question #2

In a certain code language, '357' means 'books are old', '249' means 'man is old' and '785' means 'buy good books'. What is the code for 'are'?

A. Cannot be determined

B. 7

C. 5

D. 3

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Correct Answer: Option D

Explanation:
'old' first two =? First and third 'books' =5 or 7. Remaining for 'are' is 3.

This question belongs to: Reasoning Logical Reasoning

Question #3

If in a certain code, 'LONDON' is written as 'MOPOEP', how is 'PARIS' written?

A. QB SJT

B. QBSJT

C. QB SIT

D. QBRJT

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Correct Answer: Option B

Explanation:
Each letter +1: L→M, O→P, N→O, D→E, O→P, N→O. So P→Q, A→B, R→S, I→J, S→T = QBSJT.

This question belongs to: Reasoning Logical Reasoning

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