Find the next number in the series: 3, 15, 35, 63, ? MCQ with Answer and Explanation

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Find the next number in the series: 3, 15, 35, 63, ?

A. 101

B. 99

C. 89

D. 105

Answer: Option B

Solution (By JKSSB Mock Tests)

1×3, 3×5, 5×7, 7×9, 9×11 → 3,15,35,63,99.

This question belongs to: Reasoning Logical Reasoning

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Question #1

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Statements: No A is B. All B are C. Conclusions: I. Some C are not A. II. No A is C.

A. Only II follows

B. Only I follows

C. Neither follows

D. Both follow

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Correct Answer: Option B

Explanation:
All B are C and no B is A; hence the part of C which is B is not A, so some C are not A. II is not necessarily true.

This question belongs to: Reasoning Logical Reasoning

Question #2

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If 10th February 2009 was a Tuesday, what day of the week was 10th February 2010?

A. Tuesday

B. Friday

C. Wednesday

D. Thursday

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Correct Answer: Option C

Explanation:
2009 non-leap, +1 day. Tuesday +1 = Wednesday.

This question belongs to: Reasoning Logical Reasoning

Question #3

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Statement: If it rains, the match will be cancelled. The match was cancelled. Conclusion: It rained.

A. It definitely rained

B. Conclusion follows

C. Conclusion does not follow

D. Conclusion is false

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Correct Answer: Option C

Explanation:
This is the fallacy of affirming the consequent. The match could be cancelled for other reasons.

This question belongs to: Reasoning Logical Reasoning

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