Find the missing term: 2, 3, 5, 8, 13, ? MCQ with Answer and Explanation

Find the missing term: 2, 3, 5, 8, 13, ?
A. 20
B. 19
C. 21
D. 18
Answer: Option C
Solution (By JKSSB Mock Tests)
Each term is the sum of the previous two: 2+3=5, 3+5=8, 5+8=13, so 8+13=21.

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Practice More Mental Reasoning Questions

Question #1
Find the missing term: 4, 12, 28, 60, ?
A. 112
B. 120
C. 116
D. 124

Correct Answer: Option D


Explanation:
Each term is multiplied by 2 and 4 added: 4×2+4=12, 12×2+4=28, 28×2+4=60, so 60×2+4=124.

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. Cannot be determined
D. Third to the right of F

Correct Answer: Option C


Explanation:
Multiple possible arrangements; position of C is not uniquely fixed.

This question belongs to: Reasoning Mental Reasoning
Question #3
A, B, C, D, E, F and G are sitting in a row facing North. C is to the immediate right of D. F is fourth to the left of G. B is between A and F. E is between C and G. Who is sitting in the middle?
A. B
B. C
C. D
D. E

Correct Answer: Option D


Explanation:
From clues: possible arrangement A B F D C E G or similar. Middle is 4th position. One valid is A B F D C E G → D in middle.

This question belongs to: Reasoning Mental Reasoning