Question

if a number is divisible by 4 then it must divisible by 8​

Answer 1

Answer:

Suppose a number ′N ′be divisible by 8

this means that the Number must contain 8 as a factori.e.N=8×M where M is the Result when N is divided by 8

Now, since 8 is a factor of N and 8=4×2 that means 4 is a factor of 8 and N can also be written as

N=4×2×M

So, N is also divisible by 4.