AnswersGeometryProbability

Practice Test Answers

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1
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What is the probability that the spinner lands on an even number or on the unshaded section?

A
2 fifths
B
1 fifth
C
3 fifths
D
4 fifths
2
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Given that a randomly chosen person eats breakfast almost every day, what is the probability that the person also buys cereal at least once a month?

A
53 over 57
B
53 over 64
C
11 over 53
D
11 over 64
3

A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Two marbles are drawn from the bag. Which expression represents the probability that one of the marbles is red and the other is blue?

A
the fraction with numerator open paren sub 10 cap p sub 1 close paren times open paren sub 20 cap p sub 1 close paren and denominator sub 50 cap p sub 2
B
the fraction with numerator sub 30 cap c sub 2 and denominator sub 50 cap c sub 2
C
the fraction with numerator sub 30 cap p sub 2 and denominator sub 50 cap p sub 2
D
the fraction with numerator open paren sub 10 cap c sub 1 close paren times open paren sub 20 cap c sub 1 close paren and denominator sub 50 cap c sub 2
4

Four girls and six boys are in a Spanish club. Three of the people will be chosen at random to represent the group in a photograph. What is the probability that one girl and two boys will be chosen?

A
40 percent
B
60 percent
C
50 percent
D
70 percent
5

The manager of a grocery store reports that there is a 12 percent chance that a customer buys apples during a shopping trip, a 5 percent chance that a customer buy apples and carrots, and a 17 percent chance that a customer buys apples or carrots. What is the probability of a customer buying carrots?

A
5 point 0 percent
B
1 point 4 percent
C
10 point 0 percent
D
11 point 4 percent
6

Which statements are true? Choose three correct answers.

A
cap p times open paren the intersection of cap c and cap f close paren is equal to cap p times open paren the intersection of cap f and cap c close paren
B
cap p times open paren cap c divides cap f close paren is equal to cap p times open paren cap f divides cap c close paren
C
cap p times open paren the intersection of cap c and cap f close paren is equal to 0 point 0 9
D
cap p times open paren cap f divides cap c close paren is equal to 0 point 7 5
E
cap p times open paren cap c divides cap f close paren is equal to 0 point 2 5

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