NCERT Class X Chapter 14: Probability Example 8

NCERT Class X Chapter 14: Probability Example 8

Question:

A box contains 3 blue, 2 white, and 4 red marbles. If a marble is drawn at random from the box, what is the probability that it will be (i) white? (ii) blue? (iii) red?

Given:

Number of blue marbles = 3
Number of white marbles = 2
Number of red marbles = 4

To Find:

Probability of drawing a white, blue, and red marble.

Formula:

Probability = Number of favorable outcomes Total number of outcomes

Solution:

Total number of marbles = 3 + 2 + 4 = 9

(i) Probability of drawing a white marble ⇒ 2 9

(ii) Probability of drawing a blue marble ⇒ 3 9 = 1 3

(iii) Probability of drawing a red marble ⇒ 4 9

Result:

(i) Probability of drawing a white marble = 2 9
(ii) Probability of drawing a blue marble = 1 3
(iii) Probability of drawing a red marble = 4 9

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