18 and 36, among others.
4 and 9
12 and 18
That would depend entirely on the given number.
3, 10
4 and 9 12 and 18
4 and 9 12 and 17
9 and 12 12 and 18
15,4 10,60
18 and 36 12 and 36
idkj :D
Two pairs of #'s with 10 as their least common multiple: 5x2 1x10
The product of all pairs of prime numbers is always the least common multiple of the two prime numbers.
There are many common multiples of 120 and 149. A common multiple is simply a multiple of both numbers. The least common multiple is 120x149, since 149 is prime. (Note: this trick doesn't work on all pairs of number. Although the product is always a multiple, it's not the least common multiple.)
Select ALL pairs of numbers that have a least common multiple of 30