Find the missing term: 1, 4, 9, 16, 25, ? MCQ with Answer and Explanation

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Find the missing term: 1, 4, 9, 16, 25, ?

A. 49

B. 36

C. 35

D. 30

Answer: Option B

Solution (By JKSSB Mock Tests)

These are consecutive perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, so next is 6²=36.

This question belongs to: Reasoning Mental Reasoning

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Question #1

Find the missing term: 6, 11, 21, 36, 56, ?

A. 76

B. 71

C. 81

D. 86

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Correct Answer: Option C

Explanation:
Differences: +5, +10, +15, +20, so next difference is +25: 56+25=81.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 1, 3, 7, 15, 31, ?

A. 64

B. 63

C. 65

D. 62

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Correct Answer: Option B

Explanation:
Each term is double plus 1: 1×2+1=3, 3×2+1=7, 7×2+1=15, 15×2+1=31, so next is 31×2+1=63.

This question belongs to: Reasoning Mental Reasoning

Question #3

If in the word 'DISTURBANCE', the first letter is interchanged with the last letter, the second letter is interchanged with the tenth letter and so on, which letter would come after the letter 'T' in the newly formed word?

A. I

B. N

C. U

D. S

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Correct Answer: Option B

Explanation:
Word: D I S T U R B A N C E (11 letters). Interchange 1-11, 2-10, 3-9, 4-8, 5-7, middle 6 remains. New: E C N A B R U T S I D. After T is S. Options have S. So C.

This question belongs to: Reasoning Mental Reasoning

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