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Question
Using the prime factor method, find the H.C.F. of 12, 16 and 28
Sum
Solution
Prime factor of 12 = 2 x 2 x 3
Prime factor of 16 = 2 x 2 x 2 x 2
Prime factor of 28 = 2 x 2 x 7
Common prime factor between 12, 16 and 28 = 2 x 2
H.C.F. of 12, 16 and 28 = 2 x 2 = 4
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Prime Factorization for HCF and LCM
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State true or false. Give an example.
L.C.M. of two prime numbers is equal to their product.
