Question

find hcf and lcm of 54 and 112 by prime factorisation

Answer 1

54 factors are 1, 2, 3, 6, 9, 18, 27, 54
112 factors are 1, 2, 4, 7, 8, 14, 16, 28, 56, 112.

lcm is  2 x 2 x 2 x 2 x 3 x 3 x 3 x 7 = 3024
hcf is 2

Answer 2

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