AnswersCR CCSS Math 2 S2 M2960OXSolving for Angle Measures of Right Triangles — Unit testQuestion 71
71
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Solving for Angle Measures of Right Triangles — Unit test

Question 71 • *CR CCSS Math 2 S2 [M2960OX]

Five students, Adriana, Ben, Chandra, Diana, and Ernesto, would each like one of the four spots at the regional science fair. Their names are placed in a hat, and four names are chosen at random to decide who attends the fair.What is the theoretical probability that Chandra will be chosen as one of the science fair participants?

Answer
A
25%
B
60%
C
75%
D
80%

Explanation

Four of the five students will be chosen, so only one student will not attend. Each student has the same chance of being the one left out, making Chandra’s chance of being left out 1/5. Therefore, her chance of being chosen is 1 − 1/5 = 4/5 = 80%, choice D.

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