In a row of 40 children, A is 13th from the left end and B is ninth from the right end. How many children are there between A and C if C is forth to the left of B.

14

In a row of forty children, A is 13th from the left end and B is 9th from the right end.

C is fourth to the left of B.

Therefore, the position of C from the right end = 9 + 4 = 13th

Number of children between A and C = 40 - (13 + 13)

= 40 – 26 = 14