Problems on H.C.F and L.C.M
What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30 ?

420
540
630
770

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Problems on H.C.F and L.C.M
Find the greatest number that will divide 172, 205 and 304 so as to leave the same remainder in each case?

99
66
33
None of these

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