Question

Check whether the following pairs of numbers are co-primes or not:
a) 72 and 1440 b) 680 an 1960​

Answer 1

Answer:

No, for both a and b as they can be divisible by numbers greater than 1 like 2.

Step-by-step explanation:

In number theory, two integers a and b are said to be relatively prime, mutually prime, or coprime if the only positive integer that divides both of them is 1. Consequently, any prime number that divides one does not divide the other. This is equivalent to their greatest common divisor being 1. Wikipedia