#2**+1 **

Actually, guest, though you are right, there is a way to solve this without seperatly finding each and every one of the numbers. We can use counting ;)

no, counting is not the type of counting you learned in preschool, it's premutations, the kind you use for combonations.

We can think of the number as **3 **giant spaces:

––––– –––––– ––––––

The number in those amount of spaces is the possible numbers for the input:

5 2 1

––––– –––––– ––––––

Now, all we have to do is multiply them all out:

5 * 2 * 1 = **10 possible numbers**

**And guest, you are correct. The 10 possible numbers are:**

534 634 734 834 934

543 643 743 843 943

:)

ilorty Aug 29, 2020