Question

Tushar is listing all the multiples of 5, 10 and 15 as shown below:
5, 10, 15, 20, 25, 30, 35, 40, ........
10, 20, 30, 40, 50, 60, .......
15, 30, 45, 60, 75, ....​

Answer 1

So now what? What are you trying to ask? Is it LCM?

Well, the LCM is 30. Figure it out yourself :)