It is: 14+15+22+21 = 72/4 => 18 which is the mean average
Chat with our AI personalities
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, and 25.
22 over 21 simplest form -- 1 and 1 over 21 * * * * * I suggest that the question is not about (7+15)/22 but 715/21. Difficult to be sure. If the latter, 715/22 = 169/22
The first 15 composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, and 25.
1, 4, 6, 8, 9, 12, 14, 15, 16, 18, 20, 21, 22...
The average is 23.