What 3 numbers give the same result when added or multiplied together?

Answer 1

The simplest answer is 1 and 2 and 3.

1+2+3=6

1x2x3=6

Other valid answers: 0, 0, 0

-1, 0, 1

-x, 0, x

1, 1.5, 5

The general formula here is: abc=a+b+c

abc-a=b+c

a(bc-1)=b+c

a=(b+c)/(bc-1)

If you choose two random numbers b and c you will ALWAYS have a number a that satisfies the conditions (unless bc=1)