10C5 = 10*9*8*7*6/(5*4*3*2*1) = 252
20C10 = 184,756
The numbers are 10 and 5
Five of them.
The five on the left is ten times the five on the right.
10,005,002
There are 4 possible answers: (7, 7, 10, 13, 13) (7, 8, 10, 12, 13) (7, 9, 10, 11, 13) (8, 8, 10, 10 14).
There are ten numbers from one to ten, if you include the one, and the ten. If you leave the one and ten out, then there are only eight numbers.
1,010,905.
465.001
360
360
The set of odd numbers between zero and ten includes the numbers 1, 3, 5, 7, and 9. These numbers are characterized by not being divisible by 2, and they are all positive integers less than ten. This set can be expressed as {1, 3, 5, 7, 9}.