find HCF and LCM of 12 15 and 21 by prime factorization method
sweety2952:
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Answered by
28
12=2×2×3
15=3×5
21=3×7
common factor = 3
HCF=3
LCM=2×2×3×5×7
=420
15=3×5
21=3×7
common factor = 3
HCF=3
LCM=2×2×3×5×7
=420
Answered by
12
answer is above....,,..,..,..........
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