Yr 10 Theoretical Probability

You spin the spinner. How many possible outcomes are there?

• 4
• 8
• 1
• 6

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Find the theoretical probability of landing on orange or red if you spin the spinner.

• 0
• 3/8
• 2/8
• 1/4

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking an even number. 

• 10/20
• 1/2
• 1/20
• 20/20

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CCSS.7.SP.C.5

An experiment consists of rolling a fair dice. Find the theoretical probability of rolling a 3.

• 1/6

• 3/6

• 1

• 1/2

An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling a number greater than 3.

• 4, 5, and 6
• 3/6
• 3
• 1/2

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

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

• 1/8
• 7/8
• 1
• 7

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CCSS.7.SP.C.7

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.

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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

• 1/10

• 3/10

• 30%

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

The theoretical probability of rolling an even number on a dice.

• 3/6

• 1/2

• 1/6

• 5/6

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CCSS.7.SP.C.5

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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CCSS.7.SP.C.5

CCSS.7.SP.C.7