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.
360
360
465.001
1,010,905.
Ten.Five plus five equals ten. Written in numbers, that is: 5+5=10