In a row, Rina is 10th from left and Seema is 8th from right. If they interchange positions, Rina becomes 20th from left. How many students are in the row? MCQ with Answer and Explanation

Question

In a row, Rina is 10th from left and Seema is 8th from right. If they interchange positions, Rina becomes 20th from left. How many students are in the row?

A. 28

B. 25

C. 27

D. 26

Answer: Option C

Solution (By JKSSB Mock Tests)

After interchange, Rina is at Seema's original position, which is 20th from left and 8th from right. Total = 20+8-1=27.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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In a certain code, 'COLLEGE' is written as 'DPMMFHF'. How is 'SCHOOL' written in that code?

A. TEIPPM

B. TDHQPM

C. TDIPPM

D. TDIPPL

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Correct Answer: Option C

Explanation:
Each letter +1: C→D, O→P, L→M, L→M, E→F, G→H, E→F. Similarly S→T, C→D, H→I, O→P, O→P, L→M. Thus TDIPPM.

This question belongs to: Reasoning Mental Reasoning

Question #2

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Find the missing term: 1, 1, 2, 3, 5, 8, ?

A. 11

B. 10

C. 13

D. 12

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Correct Answer: Option C

Explanation:
This is the Fibonacci series where each term is the sum of the previous two: 5+8=13.

This question belongs to: Reasoning Mental Reasoning

Question #3

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If 1 is coded as S, 2 as R, 3 as P, 4 as N, 5 as M, 6 as L, 7 as K, 8 as H and 9 as T, then how is 398745 coded?

A. PTKHMN

B. PTHKNM

C. PTHNKM

D. PTHKMN

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Correct Answer: Option B

Explanation:
3=P, 9=T, 8=H, 7=K, 4=N, 5=M. Thus PTHKNM.

This question belongs to: Reasoning Mental Reasoning

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