Question

which of the following numbers are co- prime ? 8,20​

Answer 1

Answer:

None

Step-by-step explanation:

Two integers a and b are said to be relatively prime, mutually prime, or coprime (also written co-prime) if the only positive integer (factor) that divides both of them is 1. Consequently, any prime number that divides one does not divide the other.

As of given numbers, lets find out prime factors of both:

8=2*2*2

20=2*2*5

They have prime factors 2 and 2*2 so as per above statement they are not co-prime numbers

Answer 2

A set of integers can be called coprime if its elements share no common positive factor except 1.

both of them are not co prime numbers because they have 2, 4 also same.