Question

If in a row of boys a is 10th and b is 9th and when interchange their position a becomes 15th. How many boys are there in the row

Answer 1

Answer:

16 boys

Step-by-step explanation: at that time a was greater and b was smaller so now if they will interchange, a will be smaller than b .

if a will be 15 then b will be 16 . so there are 16 boys