21.8Simply add them all up, and then divide by how many numbers you have.
21+1=22 23-1=22 11x2=22 20+2=22 24-2=22, etc.
20 + 3 = 23 23 + 5 = 28 28 / 2 = 14 14 + 3 = 17 17 + 5 = 22 22 / 2 = 11 11 + 3 = 14 14 + 5 = 19 19 / 2 = 9.5
All the numbers are composite except the ones in bold: 18 19 20 21 22 23 24 25.
The difference between 72 and 16
5
If that's 17, 22 and 23, the average is 20 and 2/3
The GCF of 20, 22, and 23 is 1.
(23-21) x 22-20
20 + [(21+23)/22]2 = 20 + [44/22]2 = 20 + 22 = 20 + 4 = 24
22
Average = sum(X)/n = 60/3 = 20
The average of 18 and 22 is 18+22/2 = 20
19.75 is the average.
The average is 23.
20+23 = 43 and 43/2 = 21.5 which is the mean average
It is: 22+27+23+24+28.5 = 124.5/5 = 24.9 which is the average number