Question

find the LCM of 20 and 22 using factorisation method
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Answer 1

Answer:

Find the prime factorization of 20

20 = 2 × 2 × 5

Find the prime factorization of 22

22 = 2 × 11

Answer 2

in figure 2 is common factor of both side so we use it as only 1 time in lcm