Question

fine the LCM of 9,30,45​

Answer 1

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Division Table

2 | 9, 30, 45

3 | 9, 15, 45

3 | 3, 5 ,15

5 | 1 ,5 ,5

1 | 1, 1

Bring down any numbers that are not evenly divisible by the prime number.

When the last row of results is all 1's you are done.

Find the product of the prime numbers in the first column to get the LCM:

LCM = 2 x 3 x 3 x 5  

LCM = 90

Therefore,

LCM(9, 30, 45) = 90

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Answer 2

Answer:

90

Step-by-step explanation:

The above picture shows how I usually solve these questions.

A tip: Try to divide using the smallest no's.