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Find the probability of the following

Posted January 31st, 2008 by alpha
in

A bag contains 5 red, 6 white and 4 black balls.A ball is drawn at random from the bag.Find the probability that the ball drawn is
1)a red ball
2) not black
3)neither red nor white

‹ Find the number of blue balls Probability ›

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answer

On January 31st, 2008 Isoscel says:

A bag contains 5 red, 6 white and 4 black balls.A ball is drawn at random from the bag.Find the probability that the ball drawn is
1)a red ball=$ \frac{5}{15} $
2) not black=red or white=$ \frac{11}{15} $
3)neither red nor white=black=$ \frac{4}{15} $

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