The LCM=60
3, 5 and 15
The LCM of 2, 5, 7 and 9 is 630.
2 and 5 2 and 10 5 and 10
Factors: 15 = 3 x 5, 18 = 2 x 3 x 3. The LCM of two numbers = their product divided by their HCF. In this instance the product is 270 and the HCF is 3 so the LCM is 90.
The LCM=60
5 and 75 15 and 25
LCM(5, 12, 15) = 60.
10 and 15
The LCM of the given three numbers is 105
The LCM of 15 and 20 is 60, which is the multiple of the combined prime factors of both numbers (2 x 2 x 3 x 5).
3, 5 and 15
4
5 and 6 have. 3 and 10 have. 2 and 15 have. 1 and 30 have.