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

Question
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. A
B. C
C. B
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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Question #1
Statements: Some dogs are cats. All cats are rats. Conclusions: I. Some rats are dogs. II. All dogs are rats.
A. Only I follows
B. Only II follows
C. Both follow
D. Neither follows
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Correct Answer: Option A

Explanation:
Some dogs are cats and all cats are rats ⇒ Some dogs are rats ⇒ Some rats are dogs. All dogs are rats does not follow. Hence only I.
This question belongs to: Reasoning Mental Reasoning
Question #2
A, B, C, D, E, F, G and H are sitting around a circular table facing the centre. A is second to the right of E who is the neighbour of F and G. D is not neighbour of A. B is neighbour of H. What is the position of C?
A. Second to the left of B
B. Immediate left of D
C. Third to the right of F
D. Cannot be determined
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Correct Answer: Option D

Explanation:
Multiple possible arrangements; position of C is not uniquely fixed.
This question belongs to: Reasoning Mental Reasoning
Question #3
Find the missing term: 9, 16, 25, 36, ?
A. 64
B. 81
C. 49
D. 47
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Correct Answer: Option C

Explanation:
The terms are consecutive squares: 3²=9, 4²=16, 5²=25, 6²=36, so next is 7²=49.
This question belongs to: Reasoning Mental Reasoning
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