Question

1) find the HCF of 54,72,90

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Answer 1

Answer:

18

Step-by-step explanation:

HCF of 54, 72 and 90 by prime factorisation method is 18.

Answer 2

Given: Number are 54, 72 and 90.To Find: Find HCF of 54, 72 and 90 by prime factorisation method.We know that highest common factor is multiplication of all common factor of prime factorization of all number, So: H.C.F = 2 ×3 ×3 =18. So HCF of 54, 72 and 90 by prime factorisation method is 18.

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