Question

A red light flashes every 3 seconds.

A yellow light flashes every 8 seconds.
A green light flashes every 11 seconds
They all flash at the same time.
After how many seconds will they next all flash at the same time?

Answer 1

264 seconds

Explanation:

first you find the L.C.M (Lowest Common Multiple) of 3,8,11 which is equal to 264

so ans equal to 264 seconds

I hope this helped