Question

I think of a number. I add 7, divide by 6, add 1 then square it. I get 9. What was my number?

Answer 1

5

Explanation:

Start with 9. Then do the opposite operation starting from the end.

9

√9 = 3

3 - 1 = 2

2 × 6 = 12

12 - 7 = 5

Answer: 5