Question

A bag contains 3 white , 4 red and 5 black balls. One ball is drawn
random . What is the probability that the ball drawn is neither black nor white ? ​

Answer 1

the probability that the ball drawn is neither black nor white = probability of getting a red ball

⇒  p = 4 / ( 3 + 4 + 5 )

⇒  p = 4 / 12

⇒ p = 1/3 .

Hope this helps you ✌️✌️☘️☘️.

Answer 2

Total possible outcomes = total number of balls =

( 3 + 4 + 5 )= 12

Total number of balls that are non black and non white = 4

Therefore, P ( getting a ball that is neither black nor White )= 4/12=1/3

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