A common prime factor between 6 and 9 is:
Only 3
1 and 3
1, 2 and 3
Only 1
Factors of 6 are: 1, 2, 3, 6
Factors of 9 are: 1, 3, 9
Common prime factor is 3 only.
The highest common factor of two prime numbers is ___ .
Two natural numbers which have common prime factors are called Co- Primes.