MATH
REVIEW
Let's Start
EASY
ROUND
1
EASY
Which of the following
situations or activities
does not involve
permutation?
EASY
A. Entering the PIN of your ATM Card.
for a picture.
attend to your party.
EASY
C. Choosing 5 of your friends to
attend to your party.
2
EASY
The notation “the
combinations of n objects
taken r at a time is .
EASY
A. C(n,r)
B. C(n,n)
C. C(r,r)
EASY
𝐴. 𝐶(𝑛, 𝑟)
3
EASY
Which of the following is
the formula to find n
objects taken r at a time if
order does not matter?
EASY
EASY
4
EASY
In how many ways can a
committee consisting of 3
numbers be formed from 7
people?
EASY
A. 40
EASY
B. 35
Use the formula for
combination
5
EASY
It is an event with
only one possible
outcome.
EASY
A.Sample Space
B.Simple Event
C.Compound Event
EASY
B. Simple Event
6
EASY
A Science Teacher wants to
assign 4 different tasks to
his/her 4 students. In how
many possible ways can he/she
do it?
EASY
A.63
B.6
C.24
EASY
Use the formula for
permutation
7
EASY
The ______of events is
the set of all the
elements that belong to
A or B.
EASY
A.intersection
B.compound
C.union
EASY
C. Union
8
EASY
A= {1,3,5,7,9}
B={2,3,5,7,11}
Find 𝐴 ∩ 𝐵.
EASY
A.{1,35}
B.{2,5,9}
C.{3,5,7}
EASY
9
EASY
We have six possible outcomes
in one throw of a fair die. Give
the events to make it NOT
Mutually Exclusive Events.
EASY
A. A= getting an odd number
B=getting a number less than 4
B. A= getting a yellow ball
B=getting a red ball
C. A= getting an even
B=getting an odd
EASY
A. A= getting an odd number
B=getting a number less than 4
NOT Mutually Exclusive Events (Two events will happen at the same
time)
Mutually Exclusive Events (Two events will happen at the same time)
10
EASY
The occurrence of
one event does not
affect the occurrence
of the other.
EASY
A.Dependent Event
B. Mutually Exclusive Event
C. Independent Event
EASY
C. Independent Event
AVERAGE
ROUND
NO CHOICES
1
AVERAGE
Out of the 250 Grade 10 students, 120
liked Mathematics(M), 160 liked
Science(S) and 75 liked both Mathematics
and Science. If a student is selected from
the group, what is the probability that
he/she liked Mathematics or Science?
(Hint: use P(AUB) = P(A) + P (B) – P(A∩B)
ANSWER
2
AVERAGE
When a coin is tossed,
and a die is rolled. What
is the probability that a
head and a 5 will turn up?
(Hint: Independent Events P (A and B) = P(A) ⋅ P(B)
ANSWER
3
AVERAGE
A box contains 6 white balls and
6 red balls. What is the
probability of drawing 1 white
balls and 1 red balls in succession
without replacement?
(Hint: Dependent Events P (A and B) = P(A) ⋅ P(B after A)
ANSWER
=
𝟔
𝟓
⋅
𝟏𝟐 𝟏𝟏
=
𝟓
𝟑𝟎
or
𝟏𝟑𝟐 𝟐𝟐