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Three brands A, B and C of biscuits are available in packets of 12, 15 and 21 biscuits respectively. If a shopkeepeer wants to buy an equal number of

biscuits, of each brand, what is the minimum number of packets of each brand, he should buy?


The minimum number of packets he should buy is the LCM of 12 , 15 and 21.
LCM of 12 , 15 and 21 by division method is 420.
Ans:The shopkeeper must buy 420 packets minimum.
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