31 + 24 + 28 + 33 + 28 + 27 + 25 = 196/7 = 28
There are 28C6 = (28*27*26*25*24*23)/(6*5*4*3*2*1) = 376,740 sets.
The average of the two odd integers is 28. Therefore the two integers are 28-1 and 28+1, i.e 27 and 29.
4x-28 = -24
The numbers are already sorted. Count how many numbers there are, and pick the one in the middle.
18 is the median of these numbers.
20, 21, 22, 24, 25, 26, 27, 28, and 30
21, 22, 24, 25, 26, 27, 28
24
25, 26, 27, 28, 30
They are: 24 25 26 27 and 28
24, 25, 26, 27, 28
20, 22, 24, 25, 26, 28, and 30
25.5
24, 25, 26, 27, 28
..... 27, 24, 26, 25, 25, 26, 24, 27, 23 .....A number is decreasing by 1 while another number is increasing by 1
The composite numbers between 20 and 30 are: 20 21 22 24 25 26 27 28 30
27