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How do you find the Least common multiple of 20, 30?

Answer 1

Riley Anderson

#lcm(20,30)=60#

multiples of 20:#" "{20,40,60,80,100,120,140,160,180..}#

multiples of 30:#" "{30,60,90,120,150,180,...}#

common multiples;#" "{60,120,180...}#

#lcm(20,30)=60#

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Answer 2

Aurora Arias

To find the least common multiple (LCM) of 20 and 30, you can use the prime factorization method.

Prime factorization of 20: 20 = 2 * 2 * 5

Prime factorization of 30: 30 = 2 * 3 * 5

Now, take the highest power of each prime factor that appears in either factorization:

The highest power of 2 is 2^2 = 4.
The highest power of 3 is 3^1 = 3.
The highest power of 5 is 5^1 = 5.

Multiply these highest powers together to find the LCM: LCM = 2^2 * 3^1 * 5^1 LCM = 4 * 3 * 5 LCM = 60

Therefore, the least common multiple of 20 and 30 is 60.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.