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UPSC 2014 CDS I Math Paper
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© examsnet.com
Question : 35
Total: 100
In a fire range, 4 shooters are firing a t their respective targets. The first, the second, the third and the fourth shooter hit the target once every 5 s, 6 s, 7 s and 8 s respectively. IF all of them hit their target at 9 :00 am, when will they hit their target together again ?
[2014 CDS-I]
9:04 am
9: 08 am
9:14 am
None of the above
Validate
Solution:
LCM of 5, 6, 7 and
8
=
2
×
2
×
2
×
3
×
5
×
7
=
840
The shooters will hit the target together again after 840 s
or
840
60
=
14
min
Thus, the shooter will hit the target together again at 9:14 am.
© examsnet.com
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