In a row of 40 children, P is 13th from the left and Q is 9th from the right. How many children are between P and Q?
Q1. In a row of 40 children, P is 13th from the left and Q is 9th from the right. How many children are between P and Q?
Answer: 18
Explanation: P is 13th from the left, so P's position is 13. Q is 9th from the right, so Q's position from the left is 40 - 9 + 1 = 32. The number of children between P and Q = 32 - 13 - 1 = 18.