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प्रश्न
A bag contains 3 white, 4 red and 5 black balls. One ball is drawn at random. What is the probability that the ball drawn is neither black nor white?
विकल्प
`1/4`
`1/2`
`1/3`
`3/4`
उत्तर
`1/3`
Explanation:
Total possible outcomes = Total number of balls = ( 3 + 4 + 5) = 12
Total number of balls that are non-black and non-white = 4
∴ P (getting a ball that is neither black nor white) = `4/12 = 1/3`
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