a. Prelims Paper (GS) Paper – 2

(CSAT Q10002) (UPSC 2014) (Time, Distance, Work) Five person fire bullets

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November 24, 2014 at 4:50 pm #3596

Wonder Boy
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Q. 10002 : Five persons fire bullets at a target at an interval of 6,7,8,9 and 12 seconds respectively. The number of times they would fire the bullets together at the target in an hour is

(a) 6

(b) 7

(c) 8

(d) 9

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solution will be provided in ~~(CSAT Q 10003)~~

March 1, 2015 at 7:38 pm #4894

Srivastava

8 times

March 2, 2015 at 6:30 pm #4900
Pratik Shinde
1. LCM of given numbers 504 sec i.e. 8.4 mins.
2. So in 1 hr with time period 8.4 min it will repeat 7 times.
3. Ans 7
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