# Probability: Random Selection

Not what you're looking for?

Two balls are drawn in succession from a box containing 4 red and 2 white balls.

a) What is the probability of drawing a red ball on the second draw if the first one is not put back in the box after it is drawn?

b)What is the probability of drawing a red ball on the second draw if the first one is put back in the box after it is drawn?

##### Purchase this Solution

##### Solution Summary

A random selection probability problem is solved.

##### Solution Preview

Part (a)

--------

There are two ways in which you can draw a red ball on the second draw : (i) You draw a red ball in Draw 1 and then draw another red ball on Draw 2 (without putting the first one back!) OR (ii) You draw a white ball in Draw 1 and then draw a red ball on Draw 2 (again without putting the first one back!)

Since there are 4 red balls and 2 white balls in the box, the probability of drawing a red ball in Draw 1 is 1/4 (one ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

##### Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

##### Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

##### Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

##### Exponential Expressions

In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.