Answers

2015-01-22T21:10:46+05:30


taking L.C.M of 12,18 & 30 which is = 2*3*2*3*7*5 = 1260 and dividing it by 2 we get the reqd no that is 1260/2 = 630


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2015-01-22T21:12:28+05:30

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420 will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30
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