Find the Least Common Multiple (L.C.M) and Highest Common Factor (H.C.F) of 20 and 30.

Question

asked May 4, 2023 183k views

1 Answer

JC Brand · Answer 1 · 2023-05-09T02:44:51+0000

Answer:

LCM: 60

HCF: 10

Explanation:

Listing Multiples

LCM:

Multiples of 20:

20, 40, 60, 80, 100

Multiples of 30:

30, 60, 90, 120

Therefore,

LCM(20, 30) = 60

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Factorization

HCF:

The factors of 20 are: 1, 2, 4, 5, 10, 20

The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30

Then the greatest common factor is 10