The product of all pairs of prime numbers is always the least common multiple of the two prime numbers.
Select ALL pairs of numbers that have a least common multiple of 30
Two pairs of #'s with 10 as their least common multiple: 5x2 1x10
12 and 18.12,24,36,48,60.18,36,54,72,90.
6 and 12 have a least common multiple of 12
20 and 25
They are: 2 and 9, 1 and 18
5,65,7
(21,5)(15,7)
Pick any two numbers. All pairs of numbers have an LCM.
It means write down three pairs of numbers that are relatively prime like 4 and 9, 5 and 6, 13 and 25
30 and 60 12 and 15