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 7 of 7.
Umar said:
9 years ago
When to take LCM and HCF? Are there any keywords in the question?
Srikanth said:
9 years ago
Thanks @Sundar.
Liana said:
9 years ago
Why is 12 seconds added?
Prathi said:
9 years ago
How to take LCM of these numbers?
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?
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