Hello, mak15!

Due to the simplicity of the given number, it is aI was given a set of number "0000011"

and asked how many different arrangements I can make with this set of number.Combinationproblem.

We will have a 7-digit number: ._ _ _ _ _ _ _

Select 2 of the position in which to place the 1's.

(The 0's will go in the remaining positions.)

The answer is: . arrangements.