Mathematics

9th -

11thgrade

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Probability

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20 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt
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    A bag contains 5 blue marbles, 4 red marbles, and 3 orange marbles. Mrs. Cox picks one without looking, replaces it and picks another one. What is the probability that she picks two that are not orange? 
    9/16
    3/4
    9/144
    5/16
  • 2. Multiple Choice
    30 seconds
    1 pt
    You have a bag of 17 marbles.  Four are blue, 6 are green, 2 are red, and the others are yellow.  What is the probability of drawing a green marble, putting it aside, and then drawing another green marble?
    15/136
    30/289
    Other
  • 3. Multiple Choice
    30 seconds
    1 pt
    In the game that Tony is playing, there is a 1/8 chance the spinner will land on red and a 3/8 chance that the spinner will land on yellow.   What is the probability that Tony will NOT spin red, then will spin red?
    7/64
    7/16
    Other
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