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Grade 7 McGraw Hill Glencoe - Answer Keys
Chapter 9: Probability; Lesson 1: Probability of Simple Events

Guided Practice

A letter tile is chosen randomly. Find the probability of each event. Write each answer as a fraction, percent, and decimal. • Question 1

1. P(D) _______________

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• Question 2

2. P(S, V, or L)  _______________

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• Question 3

P(not D) _______________

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• Question 4

The probability of choosing a “Go Back 1 Space” card in a board game is 25%. Describe the complement of this event and find its probability.

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• Question 5

Building on the Essential Question

Explain the relationship between the probability of an event and its complement. Give an example.

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