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 ?

540
630
420
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?

66
99
33
None of these

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