# RS Aggarwal Solutions Class 8 Mathematics Solutions for Probability Exercise 25A in Chapter 25 - Probability

Question 5 Probability Exercise 25A

A bag contains 5 white, 6 red, and 4 green balls. One ball is drawn at random.

What is the probability that the ball drawn is (i) green? (ii) White? (iii) Nonred?

i. We know that the bag containing the total balls = 5white+6red+4green =

15balls

Green balls = 4

By using the formula,

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

∴ Probability of getting a green ball p (G) = number of green balls/total number of balls

=4/15

ii. We know that the bag containing the total balls = 5white +6red+4green =

15balls

White balls = 5

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

=5/15=1/3

iii. We know that the bag containing the total balls = 4white +6red+4green =

15balls

Number of outcomes (excluding red) = 5white+4green=9balls

By using the formula,

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

∴ Probability of getting a green ball p (G) = number of white balls/total number of balls

=9/15=3/5

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