### All Common Core: 7th Grade Math Resources

## Example Questions

### Example Question #11 : Develop A Uniform Probability Model By Assigning Equal Probability To All Outcomes: Ccss.Math.Content.7.Sp.C.7a

Samantha has a bag of marbles containing pink marbles, orange marble, red marbles, purple marbles, white marbles, black marble, green marbles, and yellow marble. What is the probability that Samantha will pick a green marble out of the bag?

**Possible Answers:**

**Correct answer:**

In this problem we have a total of marbles. That means that each marble, regardless of color, has a chance of being picked, as shown in the images below. This image shows equal probability because each marble has a chance of being drawn, which is equal to the probability of all of the other marbles.

Samantha wants to know what her probability is of drawing a green marble out of her bag. Remember, probability is the number of favorable outcomes over the total number of outcomes:

For this problem there are green marbles; therefore,

### Example Question #146 : Statistics & Probability

Samantha has a bag of marbles containing pink marbles, orange marble, red marbles, purple marbles, white marbles, black marble, green marbles, and yellow marble. What is the probability that Samantha will pick a yellow marble out of the bag?

**Possible Answers:**

**Correct answer:**

In this problem we have a total of marbles. That means that each marble, regardless of color, has a chance of being picked, as shown in the images below. This image shows equal probability because each marble has a chance of being drawn, which is equal to the probability of all of the other marbles.

Samantha wants to know what her probability is of drawing a yellow marble out of her bag. Remember, probability is the number of favorable outcomes over the total number of outcomes:

For this problem there is yellow marble; therefore,