Question

A bag contains 7 red balls, 4 black balls and 3 white balls. A ball is drawn from the bag at random. Find the probability of getting (i) a black ball (ii) a red ball (iii) a black or white ball

Answer 1

Answer:

First for the denominator 7+4+3 = 14.

So,

(i): 4/14 = 2/7

(ii): 7/14 = 1/2

(iii): 4/14 + 3/14 = 7/14 = 1/2

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