A bag contains 4 white and 5 blue balls. They are mixed thoroughly and

1.	A bag contains 4 white and 5 blue balls. They are mixed thoroughly and one ball is drawn at random. What is the probability of getting (i) a white ball? (ii) A blue ball?
Answer» (i) We know that the bag containing the total balls = 4white + 5blue = 9ballsWhite balls = 4 By using the formula, Probability p () = number of favorable outcomes/ total number of outcomes ∴ Probability of getting a white ball p (W) = number of white balls/total number of balls =4/9 (ii) We know that the bag containing the total balls = 4white + 5blue = 9ballsBlue balls = 5 By using the formula, Probability p () = number of favorable outcomes/ total number of outcomes ∴ Probability of getting a blue ball p (B) = number of blue balls/total number of balls =5/9

A bag contains 4 white and 5 blue balls. They are mixed thoroughly and one ball is drawn at random. What is the probability of getting (i) a white ball? (ii) A blue ball?

Answer»

(i) We know that the bag containing the total balls = 4white + 5blue = 9ballsWhite balls = 4

By using the formula,

Probability p () = number of favorable outcomes/ total number of outcomes

∴ Probability of getting a white ball p (W) = number of white balls/total number of balls =4/9

(ii) We know that the bag containing the total balls = 4white + 5blue = 9ballsBlue balls = 5

By using the formula,

Probability p () = number of favorable outcomes/ total number of outcomes

∴ Probability of getting a blue ball p (B) = number of blue balls/total number of balls =5/9

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