| 1) | 1 1 2- + - 3 3 | 2) | 1 1 4- -  4- 5 8 |
| 3) | 1 1 1- + - 2 4 | 4) | 1 1 4- -  2- 4 7 |
| 5) | 1 1 2- + - 2 6 | 6) | 1 1 5- -  4- 9 3 |
| 7) | 1 1 1- + - 3 5 | 8) | 1 1 5- -  4- 7 9 |
| 9) | 1 1 1- + - 3 9 | 10) | 1 1 5- -  2- 6 5 |
| 11) | 1 1 1- + - 3 10 | 12) | 1 1 2- -  2- 7 8 |
| 13) | 1 1 1- + - 5 10 | 14) | 1 1 4- -  3- 7 5 |
| 15) | 1 1 2- + - 5 9 | 16) | 1 1 4- -  2- 7 9 |
| 17) | 1 1 2- + - 6 10 | 18) | 1 1 4- -  2- 8 9 |
| 19) | 1 1 2- + - 3 8 | 20) | 1 1 1- -  4- 8 8 |
| 21) | 1 1 2- + - 4 5 | 22) | 1 1 4- -  4- 9 8 |
Joke:
How do Microsoft employees get air into their offices? - clicking on an icon that opens a window!