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The LCM (Least Common Multiple) of 90 and 210 is the smallest number that has both 90 and 210 as factors. The LCM of 90 and 210 is 630 (2 x 32 x 5 x 7), which is the multiple of the highest power of prime factors from both numbers (2 x 32 x 5 = 90 and 2 x 3 x 5 x 7 = 210)

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Q: What is the smallest number that has 90 and 210 as factors?
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