Question

( operatorname{LCM} operatorname{dod} 2,15,21 )
( 12=272 times 2 times(3) )
( 15=(3 times 5 )
( 2=0 times 7 )
( angle C M=3 times 2 times 2 times 5 times 7 )
( =420 ) briscuits

# 22. 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?

Solution