Question

Question #a1694

Answer 1

C. 2

Explanation:

Given: certain integer divided by `5` has a remainder `= 3`. What's the remainder when `4` times the integer is divided by `5`?

The integer can vary. For example:

Let `I = 8; " " 8/5 = 1 " "R 3`; `" " 4I = 32; " "32/5 = 6 " "R 2`

Let `I = 13; " " 13/5 = 2 " "R 3`; `" " 4I = 52; " "52/5 = 10 " "R 2`

Let `I = 18; " " 18/5 = 3 " "R 3`; `" " 4I = 72; " "72/5 = 14 " "R 2`

The integer `I` is just `(5n + 3)/5`, where `n` is a positive integer