Question

9.) A flashing bulb on a Christmas tree flashes once every 10seconds.Two other bulbs flash once every 15 seconds and 24 seconds respectively.If all three bulbs are flashing together now,how long will it take for the three bulbs to flash together again​

Answer 1

Answer:

u will need to take out it's LCM

Step-by-step explanation:

LCM(10, 15, 24) = 120

Steps:

Prime factorization of the numbers:

10 = 2 × 5

15 = 3 × 5

24 = 2 × 2 × 2 × 3

LCM(10, 15, 24)

= 2 × 2 × 2 × 3 × 5

= 120

Answer 2

as requred time is multiple of given time thus required numer is the lcm of 10 , 12 , 15.

clearly 120s is our required answer