Question

find HCF and LCM of 16,32,64, using the prime factorisation method

Answer 1

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Answer 2

HCF
The factors of 16 are: 1, 2, 4, 8, 16

The factors of 32 are: 1, 2, 4, 8, 16, 32

The factors of 64 are: 1, 2, 4, 8, 16, 32, 64

Then the greatest common factor is 16 as it is the greatest number which appears in each

LCM
The LCM for 16,32,64 is 64
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