11 Scientific – Second Semester Table of Contents

For example, if ice cream sundaes come in 5 flavors with 4 possible toppings, how many different sundaes can be made with one flavor of ice cream and one topping?

• 20

• 9

• 10

• 25

In how many ways five persons can use telephones at the same time in a department containing 8 telephones?

• 56

• 120

• 6720

• 40320

Evaluate the following: 8! =

• 40320

• 5040

• 362880

• 720

Simplify: 10! / 8! =

• 90

• 80

• 100

• 72

Simplify: (n+1)! / (n-1)! =

• (n+1) * n

• (n-1) * n

• (n+1) / n

• (n+1) * (n-1)

Simplify: (n+2)! / n! =

• (n+2) * (n+1)

• (n+2)

• n+2!

• (n+2)/(n+1)

Simplify: n(n+3)! / (n+4)! =

• n / (n+4)

• n / (n+3)

• (n+3) / (n+4)

• n(n+3) / (n+4)!

Using all the letters of the word PARALLEL how many different words using all letters at a time can be made?

• 420

• 840

• 1680

• 3360

What is a permutation?

• A permutation is an arrangement of objects in different orders. The order of the arrangement is important.

• A permutation is a collection of objects where order does not matter.

• A permutation is a type of equation used in algebra.

• A permutation is a process of dividing objects into equal groups.

In how many ways can 5 persons stand in one row?

• 120

• 60

• 24

• 240