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. 3)
3.
Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?
Answer: Option
Explanation:
L.C.M. of 2, 4, 6, 8, 10, 12 is 120.
So, the bells will toll together after every 120 seconds(2 minutes).
| In 30 minutes, they will toll together | 30 | + 1 = 16 times. |
| 2 |
Discussion:
172 comments Page 4 of 18.
Adithya said:
7 years ago
Thank you @Sundar.
ASHNA said:
7 years ago
Thanks @Saravan and @Deepak.
Dive_nithi said:
7 years ago
Thank you for your excellent explanations @Sravanreddy.
Riya said:
7 years ago
Thanks @Sravanreddy.
GSS said:
7 years ago
Thnaks @Sravanreddy.
Sagar said:
7 years ago
As it is clear from the question and the answer provided that the bells Are going to toll together after every 2 min.
So, in the given interval of 30 min.
They will be going to toll 30/2 that is 15 times and early in the question they have mentioned that the bells are already toll together at once.
So, the answer is 30/2 + 1= 16 times.
So, in the given interval of 30 min.
They will be going to toll 30/2 that is 15 times and early in the question they have mentioned that the bells are already toll together at once.
So, the answer is 30/2 + 1= 16 times.
(2)
Shivam Tiwari said:
8 years ago
Why +1 is done in this can anyone say?
Orbis Roy said:
8 years ago
How to got 120 LCM? please explain me.
Ashif said:
8 years ago
Excellent explanation. Thank you so much. @Sravan.
Saanvi said:
8 years ago
Well said, Thanks @Sravanreddy.
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