1.

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»

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



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