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Math 7 - Probability Quiz Review
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How many possible outcomes are there when spinning the spinner two times?
256
A pencil box contains 5 red, 12 blue, 10 green, and 3 yellow markers. If a marker is chosen at random, what is the probability that it is not yellow? Express the answer as a fraction in simplest form and a percent.
9/10, 90%
Isaiah is studying abroad for a semester. He can choose the first semester or second semester, then choose France, Spain, Germany, Italy, or Japan. Find the total number of outcomes that are possible.
10
Find the total number of outcomes that are possible: Selecting a letter from the word TROPHY and then selecting a month of the year at random.
72
If the spinner below is spun, then a letter from the word BINGO is chosen at random, find P(less than 7, then B) as a fraction in simplest form.
3/25
If the spinner below is spun, then a letter from the word BINGO is chosen at random, find P(at least 3, then a vowel) as a simplifed fraction.
8/25
A bag contains 3 blue marbles, 10 green marbles, 4 yellow marbles, and 8 red marbles. A marble is chosen at random, not replaced, then another marble is chosen. Find P(red, then blue) as a simplfied fraction.
1/25
A bag contains 3 blue marbles, 10 green marbles, 4 yellow marbles, and 8 red marbles. A marble is chosen at random, not replaced, then another marble is chosen. Find P(both yellow) as a simplified fraction.
1/50
A bag contains 3 basketballs, 10 baseballs, 7 golf balls, and 5 footballs. A ball is chosen at random, not replaced, then another is chosen. Find P(a football, then a baseball) as a simplified fraction.
1/12
The spinner below is spun twice. Find P(shaded, then heart) as a simplified fraction.
5/32
The spinner below is spun twice. Find P(both stars) as a simplified fraction.
1/16
What is the probability of randomly selecting a square that is unshaded and odd? Express the probability as a simplifed fraction, decimal and percent.
3/20, 0.15, 15%
Jill is trying to figure out the 4-digit passcode to unlock the screen on her mom’s phone. How many different 4-digit passcodes are there?
10,000
A box contains 8 apple, 10 fruit punch, 10 grape, and 12 berry juice boxes. A juice box is chosen at random. Find the probability of selecting an apple or a grape juice box.
9/20 or 45%
Each spinner below is spun once. Find the probability of spinning a number greater than 2, then a square.
4/15
A bag contains 4 cherry, 8 orange, 6 strawberry and 10 lemon gummy bears. A gummy bear is chosen at random, eaten, then another is chosen. Find the probability of selecting a lemon, eating it, then selecting a cherry.
10/189
If Aiden has three sports coats, five pairs of pants, seven shirts and four ties, how many different ways can he select an outfit consisting of a coat, pants, shirt and tie?
420
If the spinner is spun twice, find P(at most 2, then circle).
3/16
If the spinner below is spun once, give the number of favorable outcomes for each event: spinning an even, spinning a shaded and even number, spinning a prime number
6, 2, 5
There are 3 green markers, 5 yellow markers, 4 red marker, and 12 blue markers in a pencil box. A marker is drawn, replaced, then another marker is drawn. Find P(red, then blue).
1/12