1) | 1 1 1- + - 5 8 | 2) | 1 1 5- -  4- 9 8 |
3) | 1 1 1- + - 2 9 | 4) | 1 1 3- -  4- 8 9 |
5) | 1 1 1- + - 4 5 | 6) | 1 1 2- -  4- 7 9 |
7) | 1 1 1- + - 5 9 | 8) | 1 1 2- -  4- 7 9 |
9) | 1 1 2- + - 3 6 | 10) | 1 1 4- -  2- 8 9 |
11) | 1 1 1- + - 6 12 | 12) | 1 1 4- -  3- 6 8 |
13) | 1 1 2- + - 5 5 | 14) | 1 1 3- -  2- 4 7 |
15) | 1 1 2- + - 6 3 | 16) | 1 1 5- -  4- 6 4 |
17) | 1 1 1- + - 4 7 | 18) | 1 1 5- -  3- 9 7 |
19) | 1 1 2- + - 6 4 | 20) | 1 1 1- -  4- 8 5 |
21) | 1 1 1- + - 4 12 | 22) | 1 1 3- -  3- 6 3 |
Joke:
You are warned!; if a mathematician says your child can become a banker or plumber, he means both and would call it 'OR' rule.