Question

5 - 4 = 23 8 - 1 = 63. 6 -16 = 32 9 - 9 = 78 3 - 9 = 6 3 - 81 = ? Genius heads try this Explain the logic..(y) Challenge for all masterminds!!

Answer 1

easy matter. just take the square of first number and subtract the root of the second digit.
5^2-√4=23......