Lesson on Basic Probability

Probability can be expressed as a number between_____ and _____.

• 0 and 100
• 0 and 10
• 0 and 1
• -1 and 1

Determine the probability of the following even occuring: You flip a fair coin and the coin will land heads up.

• 0

• 1/4

• 1/2

• 1

What is the probability of spinning the fair 8-sided spinner and landing on the 7?

• impossible - 0 / 8

• 1 / 2

• 1 / 8

• 7 / 8

What is the probability of spinning a fair 6-sided spinner and landing on an odd number?

• 1 / 2

• 5 / 6

• 6 / 6 or 1

• 0 / 6

Probability can be written as ...

• a fraction
• a decimal
• a percent
• all of the above

What is the probability of rolling a fair 6-sided die and having it land as a six?

• 1/6

• 5/6

• 1/3

• 1/2

What is the probability of rolling a fair 6-sided die and having it land on an odd number?

• 3/4

• 1/3

• 1/2

• 2/5

What is the probability of rolling a sum of 15 with a pair of six-sided dice?

• 0

• 1 / 36

• 15 / 36

• 5 / 36

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

What is the probability of spinning green or blue (assuming each slice/section is equal in size)?

• 0

• 5/12

• 1/2

• 3/4