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A box contains \(10\) light bulbs, fewer than half of which are defective. Two bulbs are to be drawn simultaneously from

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A box contains \(10\) light bulbs, fewer than half of which are defective. Two bulbs are to be drawn simultaneously from

by M7MBA » Thu Apr 29, 2021 1:37 am

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A box contains \(10\) light bulbs, fewer than half of which are defective. Two bulbs are to be drawn simultaneously from the box. If \(n\) of the bulbs in the box are defective, what is the value of \(n?\)

(1) The probability that the two bulbs to be drawn will be defective is \(\dfrac1{15}.\)
(2) The probability that one of the bulbs to be drawn will be defective and the other will not be defective is \(\dfrac7{15}.\)

Answer: D

Source: GMAT Paper Tests
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