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A Bag Contains 5 Red, 8 White and 7 Black Balls. a Ball is Drawn at Random from the Bag. Find the Probability that the Drawn Ball Is Neither White Nor Black. - CBSE Class 10 - Mathematics

ConceptProbability - A Theoretical Approach

Question

A bag contains 5 red, 8 white and 7 black balls. A ball is drawn at random from the bag. Find the probability that the drawn ball is neither white nor black.

Solution

Total no. of possible outcomes = 20 {5 red, 8 white & 7 black}

Let E ⟶ be event of getting neither white nor black ball

No. of favourable outcomes = 20 – 8 – 7 = 5 {total balls – no. of white balls – no. Of black balls}

Probability, P(E) ="No.of favorable outcomes"/"Total no.of possible outcomes"

P(E) = 5/20 =1/4

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Solution A Bag Contains 5 Red, 8 White and 7 Black Balls. a Ball is Drawn at Random from the Bag. Find the Probability that the Drawn Ball Is Neither White Nor Black. Concept: Probability - A Theoretical Approach.
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