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 5 of 7.
Mahendra said:
10 years ago
How did you know that is to take LCM or HCF such types of questions?
Umar said:
9 years ago
When to take LCM and HCF? Are there any keywords in the question?
Sujay said:
1 decade ago
When to take lcm and when to take HCF is confusion ? please help.
(1)
Vinay said:
10 years ago
Please tell me how to find L.C.M in quick time for far numbers?
Anisha said:
8 years ago
When to take lcm and when the hcf? Please explain it clear.
Ghanshyam said:
1 decade ago
And how to calculate HCF? Please tell me this answer also.
NaveenKK said:
1 decade ago
How we can get quick idea LCM as answer at exam time?
Gargi said:
9 years ago
If LCM is 2772 then why we are dividing 2760 by 40?
(1)
Luci said:
4 years ago
@Giridhar.
Can you explain in more detail? Please.
Can you explain in more detail? Please.
(1)
Senthil said:
1 decade ago
What is the need to take L.C.M in this question?
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