find hcf and lcm of 20,72and 96 by using prime factorisation method.solution??????
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20=2*2*5
72=2*2*2*3*3
96=2*2*2*2*2*3
Therefore,HCF=2*2=4
LCM, 96*(72*20)=138,240
72*(96*20)=138,240
20*(96*72)=138,240
72=2*2*2*3*3
96=2*2*2*2*2*3
Therefore,HCF=2*2=4
LCM, 96*(72*20)=138,240
72*(96*20)=138,240
20*(96*72)=138,240
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