﻿ Certain or Impossible Worksheets | Problems & Solutions

# Certain or Impossible Worksheets

Certain or Impossible Worksheets
• Page 1
1.
Determine whether the event is likely, unlikely, certain, or impossible to occur.
"New Year is celebrated on 1st of January every year."
 a. an impossible event b. a likely event c. a certain event d. an unlikely event

#### Solution:

The event that will happen is a certain event.

So, "New Year will be celebrated on 1st of January every year." is a certain event.

2.
Choose whether the event is likely, unlikely or equally likely to occur. "New Year is being celebrated in the month of June."
 a. an unlikely event b. a likely event c. an impossible event d. a certain event

#### Solution:

The event that cannot happen is called an impossible event.

So, "New Year is being celebrated in the month of June." is an impossible event.

3.
Determine whether the event is likely, unlikely, certain, or impossible to occur.
"A coin dropped would land on the floor showing a head."
 a. a certain event b. an impossible event c. a likely event d. an unlikely event

#### Solution:

The event will most probably happen.

So, it is a likely event.

4.
Determine whether the event is likely, unlikely, certain, or impossible to occur.
"Yesterday was Sunday. Today is Saturday."
 a. likely event b. an unlikely event c. an impossible event d. a certain event

#### Solution:

The event is impossible to occur.

5.
Determine whether the event is likely, unlikely, certain, or impossible to occur.
"A glass bottle, when dropped on the floor, breaks."
 a. a likely event b. an unlikely event c. a certain event d. an impossible event

#### Solution:

The event will most probably happen.

So, it is a likely event.

6.
Determine whether the event is likely, unlikely, certain, or impossible to occur.
"Paul picking a cherry from a basket containing a bunch of grapes."
 a. certain event b. unlikely event c. likely event d. impossible event

#### Solution:

An event that has no chance of occurring is called an impossible event.

It is impossible to pick a cherry from a basket containing a bunch of grapes.

So, it is an impossible event.

7.
An event that has no chance of occurring is called __________ event.
 a. a favorable b. an impossible c. a possible d. a certain

#### Solution:

An event that has no chance of occurring is called an impossible event.

8.
An event A is an impossible event. What is its probability?
 a. P(A) = 3 b. P(A) = 2 c. P(A) = 0 d. P(A) = 1

#### Solution:

An event that has no chance of occurring is called as an impossible event.

If event A is impossible, then P(A) = 0.

9.
An event that is certain to occur is called _________ event.
 a. a favorable b. a certain c. an impossible d. a possible

#### Solution:

An event that is certain to occur is called a certain event.

10.
An event A is a certain event. What is its probability?
 a. P(A) = 2 b. P(A) = 0 c. P(A) = 3 d. P(A) = 1

#### Solution:

An event that is certain to occur is called a certain event.

If event A is certain, then P(A) = 1.