Co-prime numbers, like 4 and 9, are any set of integers that have a GCF of 1.
No. Even numbers can't be co-prime.
They are called mutually prime or co-prime numbers.
Numbers are co-prime, or relatively prime, when their GCF is 1.
Two numbers are co-prime if they do not have any common factors. The numbers themselves need not be prime.
Such numbers are relatively prime, or co-prime.
Two numbers are considered to be co-prime if they share no common prime factors, that is, if their GCF is 1.
No - co-prime numbers are pairs of numbers which share no positive integer factors apart from 1. Twin prime numbers are a pair of prime numbers with a difference of 2.
which two multiples of 13 are co-prime numbers
Sometimes.
They are called mutually prime or co-prime numbers.
Relatively prime or co-prime.
No.