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  • A bag contains 3 red, 5 black and 7 white balls. A ball is drawn from the bag at random. The probability that the ball drawn is not black, is  Option: 1 <img alt="\frac{1}{3}" src="https://learn.careers360.com/latex-image/?

A bag contains 3 red, 5 black and 7 white balls. A ball is drawn from the bag at random. The probability that the ball drawn is not black, is 
Option: 1 \frac{1}{3}
Option: 2 \frac{9}{15}
Option: 3 \frac{5}{10}
Option: 4 \frac{2}{3}

Answers (1)

Red balls  = 3 , black balls = 5, white balls = 7

Total balls = 3 + 5 + 7

Total balls = 15

P(B) = 5/15 = 1/3

The probability that the ball drawn is not black P(B') = 1 - P(B) 

                                                                                    = 1-1/3

                                                                                    = 2/3

Posted by

Safeer PP

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