# Finding the Probability of a Compound Event

## By JoAnn's School

Includes 2 or more simple events

# Simple probability

In order to find the probability of picking a yellow marble from a bag, we have to first determine the number of possible outcomes and how then many of them meet our constraints.

# Simple probability

In this example we are figuring out the probability of randomly picking a non-blue marble from a bag. Again, we'll have to think about the possible outcomes first.

# Simple probability

Now we're working out the probability of randomly selecting a yellow marble from a bag of multi-colored marbles. Let's practice together.

# Making predictions with probability

Predict the number of times a spinner will land on an elephant.

# Probability: Finding What Percent an Event Has of Occurring

The instructor in this video Sal Khan discusses how to find the probability that an event will occur. He uses an electronic chalkboard to demonstrate several examples using a step by step approach.