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In a row of 21 students, when Monika moves four places to the right, she becomes twelfth from the left end. What was her previous position from the ri
Question

In a row of 21 students, when Monika moves four places to the right, she becomes twelfth from the left end. What was her previous position from the right end of the row?

A.

Fourteenth

B.

Fifteenth

C.

Eighth

D.

Thirteenth

Correct option is A

Given:
Total students = 21.
After moving 4 places to the right, Monika is 12th from the left.
Monika’s initial position from the left
12−4=8
So, her original position from the left end was 8.
Monika’s position from the right
The formula to calculate a person’s position from the right end is:
Position from the right=Total Students−Position from the left+1
Position from the right=21−8+1=14
Correct answer is (a) Fourteenth

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