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In a row at a bus stop, 'A' is 7th from ...

In a row at a bus stop, 'A' is 7th from the left and 'B' is 9th from the right. They both interchange their positions. Now A becomes 11th from the left. How many people are there in the row ?

A

20

B

18

C

21

D

19

Text Solution

Verified by Experts

The correct Answer is:
D
Before Interchanging. Amit.s rank from the left end `=7^(th)`. Prakash.s rank from the right end `=9^(th)`
So, total no of people `= (11+9)- = 19`
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