L(14.1): Understand Probability of an Event A

The probability of an event measures the likelihood

that an event will occur.

• True

• False

0 %

• impossible

• unlikely

• as likely as not

• likely

• certain

LESS THAN 50 %

• impossible

• unlikely

• as likely as not

• likely

• certain

50 %

• impossible

• unlikely

• as likely as not

• likely

• certain

greater THAN 50 %

• impossible

• unlikely

• as likely as not

• likely

• certain

100 %

• impossible

• unlikely

• as likely as not

• likely

• certain

What is the probability of rolling a number which is greater than 6 on a fair die?

Natalie will randomly choose one of the following days of the week to clean her bedroom:

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

• F

• M

• W

• T

There are 15 letter tiles in a bag: six tiles are labeled S, eight tiles are labeled R, and one is labeled M. Which of the following describes how likely it is to choose the letter M?

• impossible

• unlikely

• as likely as not

• likely

• certain

A bag contains 35 marbles, 34 of which are blue. If a marble is picked out at random, what is the likelihood of it being blue?

• impossible

• unlikely

• as likely as not

• likely

• certain