27.33333333
22 + 24 + 28 + 25 + 20 + 19 = 138
22
20, 21, 22, 24, 25, 26, 27, 28, and 30
21, 22, 24, 25, 26, 27, 28
The composite numbers between 20 and 30 are: 20 21 22 24 25 26 27 28 30
The composite numbers between 20 and 30 are 21, 22, 24, 25, 26, 27, and 28.
20, 21, 22, 24, 25, 26, 27, 28, 30 are composite.
27
23
There are infinitely many groups of 20 numbers that have a mean of 25. One example: 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35
20 21 22 24 25 26 27 28 30
21