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Name _____________________________
Date ___________________
Probability
Find the number of possible choices when you choose one item from each category.
1.   8 colors, 7 styles


2.   13 video games, 4 CDs


3.   4 sweaters, 2 shorts, 5 pairs of shoes



Find the probability. Write your answer as a fraction in simplest form.
1.   A number from 14 to 24 is drawn at random.
P(20).


2.   A jar contains 7 red, 14 blue, 25 black, and 24 white marbles. A marble is drawn at random.
P(blue).



Find the probability. Write your answer as a decimal rounded to the nearest hundredth.
1.   A jar contains 20 blue, 13 orange, and 5 purple marbles. A marble is drawn at random.
P(not orange).


2.   You roll a number cube numbered from 1 to 6.
P(a number greater than 5).



Find the probability. Write your answer as a percent rounded to the nearest whole percent.
1.   You roll a number cube numbered from 1 to 6.
P(a number divisible by 4).


2.   A jar contains 5 orange and 12 yellow marbles. A marble is drawn at random.
P(not yellow).



 

Key #2
aKey #2
Find the probability.
1.   A number from 17 to 29 is drawn at random.
P(an even number)
Express the probability as a decimal. Round to the nearest hundredth.


2.   You roll a number cube numbered from 1 to 6.
P(a number divisible by 4)
Express the probability as a percent. Round to the nearest percent.



Find the probability. Assume that the spinner is separated into equal sections.
1.   You roll a cube which has the numbers 8, 9, 15, 9, 15, and 8 on it. You then spin a spinner which has 5 sections. The letters on the spinner are B, E, F, G, and A.
P(8 and G)


2.   You roll a number cube numbered from 1 to 6.
You then spin a spinner with 6 sections each with a different color. The spinner has the colors purple, violet, orange, yellow, green, and navy.
P(purple and 6)



Find the probability.
1.   A deck of cards has 6 green, 3 brown, and 4 black cards. You pick 3 cards from the deck. Cards are not returned to the deck after they are picked.
P(the first card is not green, the second card is black, and the third card is not black)


2.   A deck of cards has 4 blue, 5 gray, and 4 purple cards. You pick 2 cards from the deck. Cards are not returned to the deck after they are picked.
P(the first card is purple and the second card is purple)



Find the probability. Assume that the spinner is separated into equal sections.
1.   There are 6 pink, 5 brown, and 4 yellow marbles in a hat. You pick 4 marbles from the hat. Marbles are returned after they have been drawn.
P(four brown marbles in a row)


2.   A deck of cards has 2 blue, 3 navy, and 2 purple cards. You pick 2 cards from the deck. Cards are returned to the deck after they are picked.
P(the first card is purple and the second card is blue)



 

Key #2
aKey #2
Complete.
1.   How many combinations of two letters are possible from the letters J, P, and T?


2.   There are 4 things in a hat. How many ways can you pick 2 things from the hat at once?



Complete.
1.   In how many ways can Michael, Benjamin, Danielle, Jordan, and Ashley stand in line?


2.   Emily, Eric, Connor, and Aaron ran in a race. In how many different orders can they finish the race?



Complete.
1.   How many ways can a president and vice-president be selected in a class of sixteen students?


2.   How many permutations can you make from the letters A through I?



 


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