(3)
Find HCF and LCM
of
54, 69,81 by prime facto
rizations
.
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54=2*27=2*3*9=2*3*3*3
69=3*23
81=3*27=3*3*9=3*3*3*3
HCF = 3
Multiples of 54=108,162,216,270,324........3726
Multiples of 69=69,138,207,276,34..........3726
Multiples of 81=81,162,243,324,405..........3726
LCM = 3726
Hence,LCM = 3726 and HCF = 3
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69=3*23
81=3*27=3*3*9=3*3*3*3
HCF = 3
Multiples of 54=108,162,216,270,324........3726
Multiples of 69=69,138,207,276,34..........3726
Multiples of 81=81,162,243,324,405..........3726
LCM = 3726
Hence,LCM = 3726 and HCF = 3
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