Try this without reading the answers first:
- Pick your favorite number from 1 to 9
- Multiply it with 3
- Add 3 and multiply it with 3, again
- You get a number
- You will get a two or three digit nuber.. sum the digits. (eg. 527 = 5 + 2 + 7 = 14)
- And now.. check the answer!
Click on show to see the results