TRIAL
STUDENT
A
STUDENT
B
1ST
2ND
3RD
WIN
OR
LOSE
WIN
OR
LOSE
WIN
OR
LOSE
WIN
OR
LOSE
WIN
OR
LOSE
WIN
OR
LOSE
Question:
How many times
you win or lose
the game?
Question:
In playing any game,
what can you conclude
about your chance of
winning and your chance
of losing?
PROBABILITY
OF SIMPLE
EVENT
BOYS VS. GIRLS
Look carefully at the given
set of names. One of these
names is to be drawn from a
hat.
Jack Jerry Tina Connie Joe
Marry Jenny Bob Marilyn Bill
BOYS VS. GIRLS
One of these cards
will be drawn without
looking
10 J 4 5 M 2 10 9 5 J 7 4
BOYS VS. GIRLS
One card is drawn from
a well shuffled deck of 52
cards. What is the
probability of drawing…
PROBABILITY
Probability is the measure of how
likely an event is to occur.
The more likely an event is to
occur, the higher its probability.
 The less likely an event is to occur,
the lower its probability.

PROBABILITY
PROBABILITY RULES
1. The probability of any
event is a number (either
a fraction, a decimal or
a percent) from 0 to 1.
PROBABILITY RULES
2. If any event will never
happen, then the
probability is 0.
PROBABILITY RULES
3. If an event is sure to
happen, then the
probability is 1.
PROBABILITY RULES
4. The sum of the
possibilities of all
outcomes in the sample
space is 1.
The spinner may stop on any one of the
four numbered sector of the circle. Assume
that the spinner will not stop on the line
between two sectors. Find the following:
1.P(2)
4. P(less than 5)
2. P(4)
5. P(5)
3. P(even)

Answer the ff.
1) If a letter is chosen at random
from the word CAVITE, what is
the probability that the letter
chosen is a vowel?
Answer the ff.
2) Out of 50 students, 28 are
girls. If a student is selected at
random to be a recipient of
school supplies given by the
officers of the PTA, what is the
probability of selecting a boy?
Answer the ff.
3) Kuya Kim Atienza reported
that there is a 2/5 chance of
rain tomorrow. What is the
probability that it will not rain
tomorrow?
ASSESSMENT
DIRECTION: Read the
statements carefully.
Choose the letter of the
correct answer.
1. All the possible outcomes
that can occur when a coin is
tossed twice are listed in the
box. What is the probability of
having a head?
a. 1/4
c. 3/4
HH TH
b. 1/2
d. 1
TT
HT
2. The local weather forecaster
said that there is a 20%
chance of rain tomorrow.
What is the probability that it
will not rain tomorrow.
a. 0.2
c. 20
b. 0.8
d. 80
3. A balance die is rolled.What
is the probability of rolling a
number is NOT a 3?
a. 0
c. 5/6
b. 1/6
d. 1
4. Which of the ff. statement is
TRUE?
a. Rolling a die has 5 outcomes
b. Answering a True/False- type
question has one possible outcome
c. Choosing a card from a deck of
standard cards has 52 possible
outcomes
d. Flipping a coin thrice has 3 possible
outcomes
4. Which of the ff. statement is
TRUE?
a. Rolling a die has 5 outcomes
b. Answering a True/False- type
question has one possible outcome
c. Choosing a card from a deck of
standard cards has 52 possible
outcomes
d. Flipping a coin thrice has 3 possible
outcomes