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How many numbers between 1 and 1200 are not multiples of 2 or 3?

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Hint: How many numbers between 1 and 1200 are a multiple of 2? And how many numbers between 1 and 1200 are a multiple of 3? What does it mean to be a multiple of both 2 and 3? Now try to draw a Venn diagram of this situation.

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