- A387
- B864
- C432
- D477
Step-by-Step Solution
Time = LCM(48,72,108). . LCM = seconds.
Answer: C) 432
Three traffic lights at a Delhi junction change after every 48, 72 and 108 seconds respectively.
If they all change together at 7:00:00 am, at what time (in seconds after 7:00:00) will they next change together?
Class 6HCF and LCMPlaying with Numbers
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All HCF and LCM practice questions
More Class 6 HCF and LCM practice
Find the smallest 4-digit number that is exactly divisible by 18, 24 and 32. First find…Find the largest number that divides 245 and 1029 leaving the same remainder in each…Anita has three pieces of cloth measuring 7 m, 3 m 85 cm and 12 m 95 cm. Working in…Find the least number which when divided by 15, 20 and 35 leaves a remainder of 8 in…Two numbers are in the ratio 3 : 4 and their HCF is 5. What is their LCM?