Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN: 9781305071742

Author: James Stewart, Lothar Redlin, Saleem Watson

Publisher: Cengage Learning

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#### Concept explainers

Question

A bag contains total 30 balls out of which 9 are red, 12 are white and 9 are blue. Two balls are drawn in succession without replacement.

What is the

Expert Solution

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Step 1

Let us first find probability that the first ball is red. For that we will need the following.

Since, there are total **30 balls** out which **9** are **red**, we have:

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Step 2

Probability (**P _{1}**), that the first ball is red, is now given as:

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Step 3

Let us now find probability that the second ball is white. For that we will need the following.

Since, one ball is already drawn; total **balls left**, now, are **29** out of which **12** are **white**. We have:

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