question_answer

In a row of boys, if A who is tenth from the left and B who is ninth from the right interchange their positions, Now, A becomes seventeen from the left. How many boys are there in the row?

A)  25                   

B)  27  

C)  28                   

D)  31

Correct Answer: A

Solution :

Total number of Boys = (Initial Position of B + New Position of \[A-1)\]\[=9+17-1=25\]