No.
No, multiplying a set of numbers can only come out as one product. Therefore, two numbers having the same prime factorization is impossible.
30 and 42
Two.
102 has three different prime factors so there are no TWO numbers as required by the question.
No, the only way the GCF and LCM of two numbers can be the same is if the numbers are the same.
567
No, the only way the GCF and LCM of two numbers can be the same is if the numbers are the same.
30 and 60
Two atoms with the same number of protons but different numbers of neutrons are called "isotopes".
Two.
Most of the time. If you can recognize that the two numbers are relatively prime, factorization isn't necessary. Just multiply the two numbers together.
Opposite numbers.