Question

A bag contains 18 black color balls, some white colour and some yellow color balls the total number of balls is 54 and the number of white colour balls is equal to number of yellow color balls if a ball is picked randomly,Find the probability of getting black color ball, getting either white color ball or yellow color ball
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Answer 1

Total  number of balls = 54

Number of black color balls = 18

Number of  yellow  color ball =  Number of white color ball

Therefore probability of getting black balls = 18/54=1/3

Probability of getting either yellow or white color balls= 36/54=6/9=2/3