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What pair of numbers do not have any common multiples?
All numbers have common multiples.
If two is not a common factor of a pair of numbers what other numbers cannot be common factors?
Even numbers.
How small can the least common multiple of pair of numbers be?
Can a pair of numbers have fewer than two common factors?
Yes, a pair of numbers can have fewer than two common factors. This only happens when the numbers are co-prime -- that is, when the numbers have only one common factor. In that case, the common factor is always 1.
What pair of numbers have 4 and 5 as common factors?
20 and 40 have 4 and 5 as common factors.
Is the least common multiple of a pair of numbers ever less then both numbers?
No.
When will the greatest common factor of a pair of numbers equal the least common multiple of the same pair of numbers?
Only if the magnitudes of two numbers are the same.
What is a pair of numbers that has a least common multiple of 36?
12,36
What are two pairs of numbers that have 10 as their least common multiple?
Well, darling, any pair of numbers that are multiples of 10 would work just fine. For example, 10 and 20, or 30 and 10. As long as 10 is the smallest number that both pairs can be evenly divided by, you're good to go. Math can be a real hoot sometimes, can't it?
Give all the common prime factors each pair of numbers share?
Okay. Give us a pair of numbers.
What is the least common factor of 10and 25?
The least common factor of any set of numbers is 1.
What pair of numbers has a least common multiple of 30?
Select ALL pairs of numbers that have a least common multiple of 30
