How to convert from base 10 to base 5 without 0?

Let y= log 10 of x, This gives x =10^y
Now take log of x. This gives
log base 5 (x) = y log base 5 (10). This is the way to convert....Show more

I have no idea what that question means by "without 0". Both base 10 and base 5 use the digit 0....Show more