A flashlight has 8 batteries, 2 of which are defective. If you select 2 batteries, find the probability that

You select at least 1 good battery

2 answers

Probability of getting either one or two good batteries.

Either-or probabilities are found by adding the individual probabilities.

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

P(1 good) = 6/8 * 2/7 = ?

P(2 good) = 6/8 * 5/7 = ?
0.75
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