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SAT, 21.12.2021 15:30 levilugar

A box contains 10 batteries, 6 of which are still working. Tim starts picking batteries one at a time from the box and testing them. He does not put them back. Find the probability that none of the first three work.

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A box contains 10 batteries, 6 of which are still working. Tim starts picking batteries one at a tim...
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