Uploaded by Shen Oromer - Damka

# PROBABILITY ```At the end of a 60-minute lesson, students should able to:
a. define probability;
b. finds the probability of simple events; and
c. participates actively in the class discussion.
1. Prayer
2. Daily Routine
3. Pretest (Quizizz)
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c.
d.
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5
What is the percentage of rain today, April 30, 2021 in Pasig City?
a. 34%
c. 24%
b. 28%
d. 12%
A box contains 7 red balls, 5 blue balls, and 8 yellow balls. What is the percentage of getting a blue ball?
a. 5%
c. 25%
b. 15%
d. 35%
Which of the following is NOT exactly equal to 75%?
a. 0.75
c. 3/4
b. 0.8
d. 51/68
A committee of two is to be chosen from 4 students consisting of 2 boys and 2 girls. What is the probability
that a committee of two boys will be chosen?
a. 1/2
c. 1/4
b. 2/4
d. 1/6
There are x+1 red balls, 2x+5 blue balls, and x white balls. If the probability of the selected red ball is 2/9,
what is the value of x?
a. 2
b. 3
4.
Review
Directions: Find the following.
Let A = {H1, H2, H3, H4, H5, H6}
B = {T1, T2, T3, T4, T5, T6}
C = {H2, H4, H6, T2, T4, T6}
a.
b.
c.
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g.
h.
i.
j.
1.
What is (A  C)  (B  C) ?
Answer: {H2, H4, H6, T2, T4, T6}
2.
What is (A  C)  (B  C)?
Answer: {H2, H4, H6, T2, T4, T6}
Are you familiar with this board game?
What is the chance that you will roll doubles?
How many possible outcomes are there?
How many doubles are there?
What is the chance that the double number will appear when dice are rolled?
What is Probability?
How to represent probability?
What is the PROBABILITY that the double number will appear when dice are rolled?
What is the PROBABILITY of getting two numbers with a sum of 13 when the dice are rolled?
What is zero probability? What does it mean if the probability is 1?
Illustrative Examples
1.
A blue and a green dice are rolled. Find the probability of the following events.
A = {the green die shows 6}
B = {the sum of the two numbers is 8}
C = {the sum of the two numbers is less than 6}
1. Answer Activity 3 and Valuing.