Question

5. In a lighting, green light glows after
every 12 seconds, red light glows after
every 30 seconds, blue light glows after
every 34 seconds and yellow light glows
after every 56 seconds. Find the least
time in minutes after which they all glow
together​

Answer 1

ans is 7hrs 56mins..........

Answer 2

                               <=====>

Green Light

                               <=====>