How many positive integers less than $101$ are multiples of either $5$ or $7$, but not both at once?
Question:
How many positive integers less than $101$ are multiples of either $5$ or $7$, but not both at once?
Answer:
Let's think step by step.

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How many positive integers less than $101$ are multiples of either $5$ or $7$, but not both at once?
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