In a row of boys, if A who is 10 th from the left and B who is 9 th from the right, interchange their positions, A becomes 15 th from the left. How many boys are there in the row?

Question

CollectorBabu · Accepted Answer

Correct Answer: 23. Clearly, A’s new position is 15th from the left. But this is the same as B’s earlier position which is 9th from the right. So total boys shall be = Old position of A + New position of A – 1 = 15+ 9 – 1 = 23

In a row of boys, if A who is 10 th from the left and B who is 9 th from the right, interchange their positions, A becomes 15 th from the left. How many boys are there in the row?

Contact Information

Services