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

This topic has expert replies
Legendary Member
Posts: 1622
Joined: Thu Mar 01, 2018 7:22 am
Followed by:2 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

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 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