9000139710

SubArea: 
Combinatorics
Level: 
C
Project ID: 
9000139710
Accepted: 
1
Clonable: 
0
Easy: 
0
The wallet contains nine coins: three 1-Euro coins, three 2-Euro coins and three 5-Euro coins. How many different amounts can be paid if we have to pay the amount exactly and use just three coins for this payment?
5!3!2!=10
5!3!=20
33=27
3!=6