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Q: Are 28 and 42 relatively prime numbers?

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No, 42 and 108 are not relatively prime. Two even numbers cannot be relatively prime.

No.

2842 is a single number which is a composite, not a prime.

28 = 22 × 7 42 = 2 × 3 × 7

No, they are not relatively prime.

No, they are not relatively prime.

No, they are not relatively prime.

No, they are not relatively prime.

No, 42 and 68 are not relatively prime. They have more than the number 1 as a common factor.

It is 70 or 42 that have exactly 3 prime factors

Two numbers which are "relatively prime" have no common prime factors. To illustrate, let's write several numbers in terms of their prime factors: 24 = 2 x 2 x 2 x 3 25 = 5 x 5 42 = 2 x 3 x 7 70 = 2 x 5 x 7 You can see that 24 and 25 are relatively prime, because they don't share any common prime factors. Likewise, 25 and 42 are relatively prime. 24 and 42, however, are NOT relatively prime because they share the common factors of 2 and 3. Likewise 25 and 70 are NOT relatively prime because they share the common factor 5. When a fraction is in its simplest form, the numerator and denominator are relatively prime.

The prime factors of 42 are: 2,3,7

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