11-1 and 11-2 Probability Basics

You flip a nickel three times.
Find the probability that all flips will land on tails.

• 1/2
• 1/4
• 1/6
• 1/8

A farm has 5 brown cows and 10 white cows. A fence is open and two cows escape. What is the probability that it will be a brown cow, then a white cow?

• 1/9
• 2/9
• 5/21
• 10/21

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A store sells shirts that are either small, medium, or large. The colors are either red, blue, green, or white. What is the probability someone will select a large green shirt?

• 1/3
• 1/7
• 1/9
• 1/12

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

• 3/5
• 9/100
• 1/10
• 2/5

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You roll two die.
What is the probability you will roll a 4, then roll a number less than 3?

• 1/36
• 1/18
• 1/9
• 1/6

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In a drawer, there are 6 white socks, 4 black socks, and 2 brown socks. You pick out a sock, replace it, then pick out a 2nd sock. What is the probability that you will pick a brown, then black sock?

• 1/11

• 1/18

• 1/36

• 2/33

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What is the probability of spinning an even number?

• 16 2/3%

• 33 1/3%

• 50%

• 75%

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

• 5/11
• 5/6
• 1/3
• 5

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Is the spinner more likely or less likely to land on green than yellow?

• more likely
• less likely

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If you were to roll the die one time what is the probability of it landing on a 2?

• 2 out of 6
• 2 out of 2
• 1 out of 6
• 1 out of 1

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