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There are 32 cars, 20 trucks and 8 vans in the parking lot. Find the probability that once a car or truck leaves the lot, the next vehicle leaving is a van. What is the answer?

 Jan 8, 2021
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There are 8 vans and 52 non-vans.  Given that a non-van leaves, there are 8 vans and 51 non-vans, or 59 vehicles in total.

Hence, the probability that a van leaves next is 8/59.

 Jan 8, 2021

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