Question

What is the LCM of 30 and 45?

Answer 1

Least Common Multiple is `90`

Explanation:

Multiples of `30` are `{30,60,color(red)90,120,150,color(red)180,210,240,color(red)270,...}`

Multiples of `45` are `{45,color(red)90,135,color(red)180,225,color(red)270,315,...}`

Hence, common multiples are `{90,180,270,...........}`

and Least Common Multiple is `90`.