Find the missing term: 1, 8, 27, 64, ? MCQ with Answer and Explanation

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Find the missing term: 1, 8, 27, 64, ?

A. 100

B. 144

C. 121

D. 125

Answer: Option D

Solution (By JKSSB Mock Tests)

The terms are cubes: 1³=1, 2³=8, 3³=27, 4³=64, so next is 5³=125.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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Statements: Some sweets are salt. All salt are bitter. Conclusions: I. Some bitter are salt. II. Some bitter are sweets.

A. Neither follows

B. Both follow

C. Only I follows

D. Only II follows

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Correct Answer: Option B

Explanation:
All salt are bitter ⇒ Some bitter are salt. Some sweets are salt and all salt are bitter ⇒ Some sweets are bitter ⇒ Some bitter are sweets. Both.

This question belongs to: Reasoning Mental Reasoning

Question #2

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How many 3's are there in the following sequence which are preceded by 6 but not followed by 9? 6 3 9 6 3 5 6 3 9 6 3 2 6 3 9 6 3 4

A. 3

B. 2

C. 4

D. 1

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Correct Answer: Option A

Explanation:
Look for 6 3 x where x ≠9: 6 3 9 no, 6 3 5 yes, 6 3 9 no, 6 3 2 yes, 6 3 9 no, 6 3 4 yes. Three such.

This question belongs to: Reasoning Mental Reasoning

Question #3

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If A + B means A is father of B and A × B means A is brother of B, then P + Q × R means:

A. P is uncle of R

B. P is brother of R

C. P is father of R

D. P is grandfather of R

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Correct Answer: Option C

Explanation:
P + Q means P is father of Q. Q × R means Q is brother of R. So P is also father of R.

This question belongs to: Reasoning Mental Reasoning

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