What number does 12 and 16 both go into?

Answer 1

48

That is a good answer but to get ALL answers - do the following:

12 = 3*4

16 = 4*4

Therefore 3*4*4 is the minimum number that is needed.

So to get all numbers

m*3^k*4^p

where m and k is any integer >0 and p is any integer >1