Problems on H.C.F and L.C.M
A, B and C start running around a circular stadium and complete one round in 27 s, 9 s and 36 s, respectively. In how much time will they meet again at the starting point?

2 minute 48 seconds
3 minute 48 seconds
1 minute 48 seconds
4 minute 48 seconds

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Problems on H.C.F and L.C.M
Find the greatest number that will divide 147,185 and 251 leaving the remainders 3,5 and 11 respectively.

11
14
12
13

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