Problems on H.C.F and L.C.M
Six bells commence tolling together and toll at the intervals of 2,4,6,8,10,12 seconds resp. In 60 minutes how many times they will toll together.

31
17
21
24

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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
12
14
13

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