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  • 21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, . . .
  • 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, . . .
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11y ago
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Q: What are the multiples of 21 and 9?
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