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What is the least common multiple of $9$ and $10$ ? $\newline$ _____

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Least common multiple

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Q. What is the least common multiple of

9

and

10

?

\newline

_____

Identify Multiples of $9$ : Identify the multiples of $9$ . Start with $9$ and keep adding $9$ to get the next multiple. Multiples of $9$ : $9, 18, 27, 36, 45, 54, 63, 72, 81, 90, \ldots$
Identify Multiples of $10$ : Identify the multiples of $10$ . Start with $10$ and keep adding $10$ to get the next multiple. Multiples of $10$ : $10, 20, 30, 40, 50, 60, 70, 80, 90, 100, \ldots$
Find Smallest Common Multiple: Find the smallest common multiple. $\newline$ Common multiples from the lists: $90$ , $180$ , $270$ , ... $\newline$ The smallest common multiple is $90$ .

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