Probability is a branch of mathematics that deals with describing how likely events are to occur or propositions are to be true. The document provides examples of calculating probabilities of outcomes from common random events like coin tosses, dice rolls, and drawing balls from a box containing a mix of colored balls. Readers are prompted to consider the possible results of these random events and to calculate probabilities for specific outcomes like getting a sum of 7 when tossing two dice.

2. Probability is the branch of mathematics
concerning numerical descriptions of how
likely an event is to occur, or how likely it is
that a proposition is true.

3. Let’s Try
List the elements or the results when you perform the
following activities.
1. Tossing a COIN

4. Let’s Try
List the elements or the results when you perform the
following activities.
2. Rolling a die

5. Let’s Try
List the elements or the results when you perform the
following activities.
3. Ask the birth month of persons you met in the school
campus

6. Suppose that you have to choose on what Outfit to
wear, How many options do you have?

10. Examples
In tossing two dice, what is the probability of the
event?
a. A sum of “7”
b. A sum of “5”

12. Examples
There are 2 blue balls, 4 brown balls, and 3 yellow balls
in a box. Find the probability that the ball draw will be
brown? Yellow? blue?