- #1
Natasha1
- 493
- 9
Homework Statement
The numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 are printed on individual cards.
How many ways can you choose three cards so that the total of the three numbers is 15?
The Attempt at a Solution
The different ways I can see are:
0, 9, 6
0, 8, 7
1, 9, 5
1, 8, 6
1, 5, 9
2, 9, 4
2, 8, 5
2, 7, 6
2, 6, 7
2, 4, 9
3, 8, 4
3, 7, 5
4, 9, 2
4, 8, 3
4, 6, 5
Is 15 different ways the answer?