2, 1 or 0.
1 & 2 are the only non-zero remainders you can get from dividing a whole number by 3.
1 and 3 will divide into both numbers with no remainders
It is 75.
75
733.4286
0.0107
5
0.5
the max remainder you can have when dividing by a number is that number minus 1 So 4 can only have 1, 2 and 3 as remainders. 9 can only have 1-8 and so on.
4
12 13 19
Repeatedly divide by 5 (noting the remainders) until the quotient is zero. Then write the remainders out in reverse order.