1. Choose a 3 x 3 square on a calendar.
2. Add the nine numbers together.
3. When you give me the sum, I will tell you your middle number and the number in the upper left corner.
Click here to see why it works
2. Add the nine numbers together.
3. When you give me the sum, I will tell you your middle number and the number in the upper left corner.
Click here to see why it works