A group of 7 friends want to sit in a row for a photograph. In how many ways can they be seated?
Q1. A group of 7 friends want to sit in a row for a photograph. In how many ways can they be seated?
Answer: 5040
Explanation: 7 friends can be seated in 7! = 7 * 6 * 5 * 4 * 3 * 2 * 1 = 5040 ways.