MASTERY TEST 4.1

It is an arrangement of all or part of a set of objects, with regard to the order of arrangement.

• factorial notation

• counting principle

• permutation

• probability

What is the simplified form of (n−2)!n!?

• 1/n(n−1)

• 1/n(n−2)

• 1/(n−1)

• 1/(n−2)

How many total outfit options are presented on the left?

• 22

• 12

• 6

• 3

A school canteen offers 4 milk tea flavors, 3 sandwiches, and 2 sides (fries & pie). In how many ways can a student select an item from each kind (milk tea, sandwich, & sides)?

• 288

• 144

• 24

• 9

Which of the following conditions involves permutations? I. the arrangement of letters in the password of your facebook account II. choosing three students from your class to attend a conference III. the order of the winners in a contest

• I & II

• II & III

• I & III

• I, II & III

Which of the following statements is/are true? I. 2! + 4! = 6! II. 4 – 2! = 2! III. 4!/2! = 2!

• I

• II

• III

• I, II & III

How many choices are there for selecting the champion, first runner-up, and second runner-up from the 6 contestants?

• 60

• 720

• 120

• 880

Given that Megan is the second runner-up, how many choices are there for selecting the champion, first runner-up, and second runner-up from the 5 contestants.

• 20

• 50

• 60

• 180

A new fast food restaurant has opened and they offer snack combos for Php 199. With the combo meal you get 1 sandwich, 1 side and 1 drink. How many different combo meals you can choose?

• 6

• 12

• 18

• 24

At a convenient store, they have 3 different flavors of ice cream (buko, chocolate, ube) and you can choose one topping of 2 toppings (marshmallows, nuts). How many choices do you have?

• 2

• 4

• 6

• 8