Question

find the LCM of 27 and 90 by prime factorisation method​

Answer 1

Answer:

Find the prime factorization of 27

27 = 3 × 3 × 3

Find the prime factorization of 90

90 = 2 × 3 × 3 × 5

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 3 × 3 × 3 × 5

LCM = 270

Answer 2

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