Question

a number dividwhened by 143 leaves 31 as remainder what will be the remainder when the same number is divided by 13

Answer 1

A number when divided by 143 leaves 31 as remainder.
⇒ The given number is of the form 143x + 31 = 13(11x) + 13 × 2 + 5 = 13(11x + 2) + 5
⇒ The remainder when the given number is divided by 13 is 5

Answer 2

copy and pasted^^^^

Answer 3

can u please explain it