Question

Prove with the help of an example that if a is a factor of b then a is a factor of any multiple of b such as 2b 3b 4b etc.

Answer 1

let's take an example of 2(a)
now 2 is factor of 4(b)
so multiples of 4 are 8 ,16 ,etc
now 8 and 16 are also divisible by 2
hence proved