Answer :

(i) white


Total numbers of red balls = 4


Number of black balls = 5


Number of white balls = 6


Total number of balls = 4 + 5 + 6 = 15


Probability of getting a white ball is =


(ii) red


Total numbers of red balls = 4


Number of black balls = 5


Number of white balls = 6


Total number of balls = 4 + 5 + 6 = 15


Probability of getting a red ball is =


(iii) not black


Total numbers of red balls = 4


Number of black balls = 5


Number of white balls = 6


Total number of balls = 4 + 5 + 6 = 15


Number of non black balls = 4 + 6 = 10


Probability of getting a non black ball is =


(iv) red or white


Total numbers of red balls = 4


Number of black balls = 5


Number of white balls = 6


Total number of balls = 4 + 5 + 6 = 15


Number of red and white balls = 4 + 6 = 10


Probability of getting a red or white ball is =


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