20 and 30
15 and 60
20 and 30
4 and 15
10 and 35 2 and 70
4 and 9, 12 and 18
It means write down three pairs of numbers that are relatively prime like 4 and 9, 5 and 6, 13 and 25
18 and 36 12 and 36
A common multiple
The product of all pairs of prime numbers is always the least common multiple of the two prime numbers.
Two pairs of #'s with 10 as their least common multiple: 5x2 1x10
Pick any two numbers. All pairs of numbers have an LCM.
12 and 18.12,24,36,48,60.18,36,54,72,90.
20 and 25
10 and 35 2 and 70
5,65,7
30 and 60 12 and 15
How about: 2 3 4 and 6
12 and 18 4 and 9
21 and 35 7 and 15
4 and 9 12 and 36