Basic Probability

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.

What is the probability of spinning red?

• very likely 
• unlikely
• certain 
• equally likely 

What is the probability of spinning green?

• impossible
• unlikely
• very likely 
• equally likely 

• Certain
• Likely
• Unlikely
• Impossible

A bag has 3 red marbles, 2 blue and 4 yellow. What is theprobability of pulling a orange?

• certain
• impossible 
• unlikely 
• equally likely 

What is the probability of drawing a star?

• 4 out of 6

• 2 out of 6

• 4/6

• 2/6

What is the probability of picking a heart or square?

• 4 out of 7

• 4/7

• 3 out of 7

• 3/7

What is the probability of flipping heads on a coin?

• impossible

• unlikely

• equally likely

• likely

What is the probability of spinning green?

• 0
• 1/4
• 1/2
• 3/4

A die is rolled once.  What is the probability of rolling a 5? Your answer should be a fraction in simplest form.

• 1/6
• 1/3
• 2/5
• 5/6