What is the first common multiple of 6 and 9?

Mixed operations with integers中文
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Worked solution

1

1. List the first few multiples of 6 and 9

Multiples of 6: 6,12,18,24,…6, 12, 18, 24, \dots
Multiples of 9: 9,18,27,…9, 18, 27, \dots

2. Identify the first common multiple

The smallest number that appears in both lists is 1818.

Answer

18 (option 2)

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