Question

A certain umber when divided by 39 leaves a remainder 20, what is the remainder when the same number be divided by 13?

a) 7

b) 11

c) 0

d) 5

Answer 1

Correct option: (a) 7

Explanation:

Let the number = x

Divisor (d) = 39

Remainder (r) = 20

X = (d x q) + r

X = (39 x q) + 20

When divided by "13"

X = 13 x 3 x q + 13 + 7

X =13 (3q + 1) + 7

Remainder = 7