# Homework Hints 13-1

[tippy title=”Problems 1-4″]Problems 1-4
These problems are reviewing the basic ideas of probability. Make sure you can answer each of these questions (even if the problems are not assigned).[/tippy]

[tippy title=”Problems 5-8″]Problems 5-8
First, find the proportion of the circle included in each region. For example, A is one-third of the circle, F  is one-half of the circle,  and G is one-sixth of the circle. See Example 4.[/tippy]

[tippy title=”Problems 9-11″]Problems 9-11
Use the definition of probability, as shown in Example 6.[/tippy]

[tippy title=”Problem 12″]Problem 12
Count the balls in the jar as shown in Example 5.[/tippy]

[tippy title=”Problems 13-22″]Problems 13-22
Use Table 13.1 for s and 2,598,960 for n, and use the definition of probability.[/tippy]

[tippy title=”Problem 23″]Problem 23
Consider the sample space to formulate the probability.[/tippy]

[tippy title=”Problems 24-25″]Problems 24-25
Divide the number of success by the number of possibilities, as shown in Example 8.[/tippy]

[tippy title=”Problems 26-27″]Problems 26-27
The word “and” means both and the word “or” means either. For example, can a single card be “both” a six and a two? Of course not! Can a single card be “either” a six or a two? Sure. To formulate the probability, write the number of success by the number of possibilities, as shown in Example 11.[/tippy]

[tippy title=”Problems 28-31″]Problems 28-31
First list the sample space (see Example 1) and then formulate the probability as shown in Example 2.[/tippy]

[tippy title=”Problems 32-36″]Problems 32-36
See Figure 13.5 to find the number of success and then divide by the number of possibilities (36) as shown in Example 9.[/tippy]

[tippy title=”Problems 37-39″]Problems 37-39
Remember the meaning of the words “and” and “or”. See Examples 9 and 11.[/tippy]

[tippy title=”Problems 40-47″]Problems 40-47
List the sample space for the spinners as shown in Example 7. Next, note the success and the total number of possibilities to find the probability by using the definition.[/tippy]

### Note: Homework Hints are given only for the Level 1 and Level 2 problems.

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 problems, check some sources for help on the internet (see the LINKS for that particular section. As a last resort, you can call the author at (707) 829-0606.

On the other hand, the problems designated “Problem Solving” generally require techniques that do not have textbook examples.

There are many sources for homework help on the internet.

Algebra.help
Here is a site where technology meets mathematics. You can search a particular topic or choose lessons, calculators, worksheets for extra practice or other resources.
http://www.algebrahelp.com/