Aptitude - Problems on H.C.F and L.C.M - Discussion
Discussion Forum : Problems on H.C.F and L.C.M - General Questions (Q.No. 15)
15.
A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and c in 198 seconds, all starting at the same point. After what time will they again at the starting point ?
Answer: Option
Explanation:
L.C.M. of 252, 308 and 198 = 2772.
So, A, B and C will again meet at the starting point in 2772 sec. i.e., 46 min. 12 sec.
Discussion:
66 comments Page 6 of 7.
Kiran soni said:
1 decade ago
How can I quickly find 2772 LCM ?
Please reply.
Please reply.
(1)
Akhila said:
4 years ago
@Isa.
Your answer is very helpful. Thank you'.
Your answer is very helpful. Thank you'.
(5)
Nagalakshmi said:
9 years ago
What will happen if we take HCF instead of LCM?
Parveen Kumar said:
1 decade ago
How do we decide that we calculate LCM or HCM?
Kranthikumar said:
1 decade ago
When to take lcm & hcf. Its confusing.
Niha said:
9 years ago
Why we have to take LCM for this problem?
Anitha said:
6 years ago
LCM is 2772.
So, 2772/60 = 46min 12sec.
So, 2772/60 = 46min 12sec.
Viswa said:
7 years ago
Thank you all for explaining the answer.
Preeti said:
1 decade ago
Why we are taking LCM in this question?
Isha said:
5 years ago
Thanks all for explaining the answer.
(1)
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