Statements: All pens are books. Some books are erasers. Conclusions: I. Some pens are erasers. II. Some books are pens. Which conclusion(s) follow(s)? MCQ with Answer and Explanation

Question

Statements: All pens are books. Some books are erasers. Conclusions: I. Some pens are erasers. II. Some books are pens. Which conclusion(s) follow(s)?

A. Only II follows

B. Both I and II follow

C. Only I follows

D. Neither I nor II follows

Answer: Option A

Solution (By JKSSB Mock Tests)

From 'All pens are books' we can conclude 'Some books are pens'. But no definite relation follows between pens and erasers.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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Find the missing term: 1, 4, 10, 22, 46, ?

A. 92

B. 94

C. 96

D. 90

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Correct Answer: Option B

Explanation:
Each term is multiplied by 2 and 2 is added: 1×2+2=4, 4×2+2=10, 10×2+2=22, 22×2+2=46, so next is 46×2+2=94.

This question belongs to: Reasoning Mental Reasoning

Question #2

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Find the odd one out: 11, 22, 33, 44, 45

A. 44

B. 11

C. 33

D. 45

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Correct Answer: Option D

Explanation:
11, 22, 33 and 44 are multiples of 11, but 45 is not.

This question belongs to: Reasoning Mental Reasoning

Question #3

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Find the missing term: 4, 9, 25, 49, ?

A. 100

B. 169

C. 121

D. 81

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Correct Answer: Option C

Explanation:
These are squares of consecutive prime numbers: 2²=4, 3²=9, 5²=25, 7²=49, so next is 11²=121.

This question belongs to: Reasoning Mental Reasoning

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