Probability

A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?

• 3

• $\frac{1}{10}$
  

• $\frac{3}{10}$
  

• $\frac{1}{2}$

What is the probability of flipping a coin

3 times and getting 3 heads?

• 
  

  $\frac{1}{8}$
  

• $\frac{1}{4}$
  

• $\frac{1}{2}$
  

• $\frac{3}{4}$
  

You pick a marble from this bag.

What is the probability you will choose either a black or white marble?

• 
  

  $\frac{3}{5}$
  

• $\frac{3}{10}$
  

• $\frac{1}{10}$
  

• $\frac{2}{5}$
  

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 
  

  $\frac{5}{11}$
  

• $\frac{5}{6}$
  

• $\frac{2}{11}$
  

• $\frac{4}{11}$
  

Find the theoretical probability of NOT landing on yellow if you spin the spinner.

• 
  

  $\frac{1}{8}$
  

• $\frac{7}{8}$
  

• $\frac{1}{2}$
  

• $\frac{5}{8}$
  

What is Theoretical Probability?

• The ratio of favorable outcomes to the total number of possible outcomes.

• The ratio of favorable outcomes to the total number of trials in an experiment.

• In probability, a controlled, repeated process (such as repeatedly tossing a coin).

• A single possible result.

A spinner is spun twice. What is the probability of spinning green both times?

• 
  

  $\frac{1}{16}$
  

• $\frac{3}{12}$
  

• $\frac{1}{4}$
  

• $\frac{1}{8}$
  

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?

• 
  

  $\frac{5}{6}$
  

• $\frac{1}{2}$
  

• $\frac{1}{3}$
  

• $\frac{1}{6}$
  

What is the probability of getting an odd number on the first roll and less than 3 on the second roll?

• $\frac{1}{6}$

• $\frac{1}{2}$
  

• $\frac{3}{5}$
  

• $\frac{1}{3}$
  

While Tim is waiting for class to start, he pulls a quarter from his pocket. How many outcomes are possible if he flips the quarter 3 times?

• 3

• 6

• 12

• 8