Question

find the LCM of 15,20,90.​

Answer 1

Answer:

Your answer is 180

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Answer 2

Answer:

$15 = 3 \times 5 \\ 20 = 2 {}^{2} \times 3 {}^{2} \times 5 \\ 90 = 2 \times 5 \times 9 \\ \\ lcm = 2 {}^{2} \times 3 {}^{2} \times 5 = 180$