What should come next in the following letter series? A A B A B C A B C D A B C D E A B C D MCQ with Answer and Explanation

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What should come next in the following letter series? A A B A B C A B C D A B C D E A B C D

A. C

B. B

C. A

D. E

Answer: Option D

Solution (By JKSSB Mock Tests)

The series is A, AB, ABC, ABCD, ABCDE, ABCDEF... So after A B C D the next group starts with A B C D E, so next letter is E.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Find the missing term: 3, 10, 29, 66, ?

A. 129

B. 127

C. 131

D. 125

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Correct Answer: Option B

Explanation:
The terms follow n³ + 2: 1³+2=3, 2³+2=10, 3³+2=29, 4³+2=66, so next is 5³+2=127.

This question belongs to: Reasoning Mental Reasoning

Question #2

Statements: All fruits are vegetables. All vegetables are plants. Conclusions: I. All fruits are plants. II. Some plants are vegetables.

A. Only II follows

B. Only I follows

C. Both follow

D. Neither follows

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Correct Answer: Option C

Explanation:
All fruits are vegetables and all vegetables are plants ⇒ All fruits are plants. Also some plants are vegetables (conversion of all vegetables are plants). Both follow.

This question belongs to: Reasoning Mental Reasoning

Question #3

Find the odd one out: 12, 18, 24, 36, 48

A. 48

B. 24

C. 12

D. 18

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Correct Answer: Option D

Explanation:
All others are multiples of 12; 18 is not a multiple of 12.

This question belongs to: Reasoning Mental Reasoning

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