NO !
Two numbers are relatively prime if they do not share any common factors.
198 and 216 are both even so without any further investigation they both have 2 as a factor and are thus NOT relatively prime.
If you look further, they both have 32 as another factor.
No.
The greatest common factor of 25 and 72 is 1, so they are relatively prime.
18
The factors of 198 are: 1 2 3 6 9 11 18 22 33 66 99 198The factors of 216 are: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216
The prime factorization of 198 is: 2 x 32 x 11 = 198
!8
The GCF is 18.
The prime factors of 216 are: 2, 3
216 has two prime factors: 2 and 3.
No, 216 is a composite number.
216 is not prime. 216 = 2 * 2 * 2 * 3 * 3 * 3
198 is a composite number.