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Question
Find the HCF of 84 and 144 by prime factorisation method.
Sum
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Solution
Prime Factorisation of
84 = 2 × 2 × 3 × 7
144 = 2 × 2 × 2 × 2 × 3 × 3
So, HCF of 84 and 144 = 2 × 2 × 3
= 12
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