Choose any two digit number, add together both digits and then subtract the total from the original number.*

When you have the final number lookup it up on the chart and find the relevant symbol.
Concentrate on the symbol and when you have it clearly in your mind click the crystal ball and it will show you the symbol you are thinking of….

* For example if you choose 23: 2+3 = 5. 23 minus 5 will give you your answer.

See if you can figure out how it works before looking at the code.

Mind reader workbook