X divides a number by 1209 and get a remainder62 if y divides the same number by 31 then what is the remainder?

Answer 1

As 1209 is 39 x 31 and 62 = 2 x 31, the answer is zero.

As an example divide 2480 by 1209, answer 2 remainder 62;

Now divide it by 31, answer 80 no remainder.