How many code variations can get with 2 digit numbers in 5 places like in some lottery.

Assuming that  we can write  1 as 01, 2 as 02...etc.   and there are " n " two digit numbers

The number of combinations  is  given by C (n , 5)

For instance.....choosing 5  numbers from 50  gives  C (50,5)  =

2,118,760  combinations (different possibilities)