Probability

• Certain
• Likely
• Unlikely
• Impossible

• Certain
• Likely
• Unlikely
• Impossible

• Certain
• Likely
• Unlikely
• Impossible

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

• certain
• impossible 
• unlikely 
• equally likely 

What is the probability of spinning green?

• 0
• 3/12 or 1/4

• 6/12 or 1/2

• 9/12 or 3/4

What is the probability of spinning an even number?

• 16%

• 33 %

• 50%

• 75%

Answer explanation

There are 6 possible numbers that the spinner could land on. Three of those numbers are positive numbers. Therefore 3/6 spins could land on an even number. The fraction 3/6 is also the same as 50% or half.

What is the probability of spinning yellow?

• 0
• 1/4
• 1/12

• 3/4

What is the probability of spinning an odd number?

• 1/3

• 3/6

• 2/12

• 1/6

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

• 6/10 or 3/5

• 9/100 or 1/10

• 3/6 or 4/12

• 2/5 or 3/10

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6