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Prelim Standard 2 Relative Frequency and Probability 2
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Betty has 18 red discs and 2 blue discs in a bag. What is the probability that two discs randomly selected from the bag will be blue discs?
1 point
A
B
C
D
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Karen rolls a die. If she rolls a one, she wins $12, but if she rolls an even number she loses $4. What is her financial expectation?
1 point
$0
$2
$4
$8
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Mark is playing a game which involves rolling two standard dice. To win on a given roll, he needs to get either a total of 7 or 10. What is the probability he will successfully do this?
1 point
1/2
1/3
1/4
1/6
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Elise is playing in a chess tournament, in each match she plays, Elise has a 40% chance of winning. Which of the following, calculates the probability she will win exactly one of the next 2 matches?
1 point
A
B
C
D
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