Another way of looking at it is to look at multiplications of 1:
5*1 = 5
4*1 = 4
3*1 = 3
2*1 = 2
1*1 = 1
0*1 = ?
There's a clear pattern emerging. Anything multiplied by 1 is itself. So the only logical value for 0*1 is 0.
5*1 = 5
4*1 = 4
3*1 = 3
2*1 = 2
1*1 = 1
0*1 = ?
There's a clear pattern emerging. Anything multiplied by 1 is itself. So the only logical value for 0*1 is 0.





