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When we pass from crossing on a road we ...

When we pass from crossing on a road we all see traffic lights blinking there. A traffic controller set the timmings of traffic lights in such a way that all lights are not green at the same time or specially not in the rush hour, because it can create chaos or problems. So, he take the timings of nearby places in same area and calculate LCM of all traffic stops and he easily manage the traffic by increase the duration or set at different times.
There are two traffic lights on a particular highway which shows green light on time of 90 seconds and 144 seconds respectively.

Evaluate the HCF of the timings of two green Lights.

A

21

B

18

C

17

D

22

Text Solution

Verified by Experts

The correct Answer is:
B
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When we pass from crossing on a road we all see traffic lights blinking there. A traffic controller set the timmings of traffic lights in such a way that all lights are not green at the same time or specially not in the rush hour, because it can create chaos or problems. So, he take the timings of nearby places in same area and calculate LCM of all traffic stops and he easily manage the traffic by increase the duration or set at different times. There are two traffic lights on a particular highway which shows green light on time of 90 seconds and 144 seconds respectively. Calculate their LCM.

When we pass from crossing on a road we all see traffic lights blinking there. A traffic controller set the timmings of traffic lights in such a way that all lights are not green at the same time or specially not in the rush hour, because it can create chaos or problems. So, he take the timings of nearby places in same area and calculate LCM of all traffic stops and he easily manage the traffic by increase the duration or set at different times. There are two traffic lights on a particular highway which shows green light on time of 90 seconds and 144 seconds respectively. Which of the following relation is correct?

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