Average of 21, 24, 21 and 23 = (21+24+21+23)/4 = 22.25
The average of 18, 24, and 27 is 23.
The average is 24.
Add them all and divide by five.
21 22 23 24 which is the prime number
21/24 - 23/24 = -2/24 or -1/12
23
22
you can be 21 at the youngest and can really work up to any age but the most average age is 23 and 24
24
19 + 24 + 20 = 63/3 = 21 The average of the three numbers is 21.
(23-21) x 22-20
23 is prime.