| 1) | 1 1 1- + - 4 11 | 2) | 1 1 3- -  2- 6 3 |
| 3) | 1 1 1- + - 2 12 | 4) | 1 1 3- -  3- 8 6 |
| 5) | 1 1 2- + - 3 6 | 6) | 1 1 4- -  3- 8 6 |
| 7) | 1 1 1- + - 2 10 | 8) | 1 1 4- -  2- 6 6 |
| 9) | 1 1 1- + - 2 11 | 10) | 1 1 5- -  3- 9 4 |
| 11) | 1 1 2- + - 3 4 | 12) | 1 1 3- -  3- 9 3 |
| 13) | 1 1 1- + - 6 3 | 14) | 1 1 3- -  4- 9 8 |
| 15) | 1 1 2- + - 4 6 | 16) | 1 1 4- -  2- 9 4 |
| 17) | 1 1 1- + - 5 4 | 18) | 1 1 1- -  4- 9 3 |
| 19) | 1 1 2- + - 5 12 | 20) | 1 1 1- -  2- 7 8 |
| 21) | 1 1 2- + - 2 9 | 22) | 1 1 2- -  4- 7 7 |
Joke:
If your father was a mathematician, he would warn you in the form of 'I told you n times; and I told you n+1 times' and so on!