what is the lowest common multiple for 3, 5 and 6?

Answer 1

Let's look at the multiples of 6.

6, 12, 18, 24, 30, 36, 42, 48

Which of those numbers is also divisible by 3 and 5?

Answer 2

i meant 30

Answer 3

Right. That's the lowest common multiple of 3, 5, and 6.