Three different electronic alarm clocks ring after every 30 seconds, 40 seconds and 50 seconds. All clocks rung together at 10:00 am. They will again ring together at

Options
- 10:05 am
- 10:10 am
- 10:45 am
- 10:15 am

CORRECT ANSWER : 10:10 am

Discussion Board
hcf and lcm

we have to find lcm of 30,40,60
lcm=600 sec;
600sec=10min
therefore 10:10am

dinesh battu 12-18-2018 09:18 PM

Write your comments


Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)


Advertisement
 
▲