Let $a$ and $b$ be distinct positive divisors of $80.$ What is the smallest possible value of $ab$ which is not a divisor of $80?$
Question:
Let $a$ and $b$ be distinct positive divisors of $80.$ What is the smallest possible value of $ab$ which is not a divisor of $80?$
Answer:
Let's think step by step.

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Let $a$ and $b$ be distinct positive divisors of $80.$ What is the smallest possible value of $ab$ which is not a divisor of $80?$
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