Mathematics

10th

grade

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counterexamples

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15 questions

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  • 1. Multiple Choice
    2 minutes
    1 pt
    If it is a fraction, then it is a number between zero and one. What is an appropriate counterexample?
    2/3
    4/5
    1/2
    3/2
  • 2. Multiple Choice
    2 minutes
    1 pt
    If it is an angle, then it is acute. What is an appropriate counterexample?
    70⁰
    45⁰
    120⁰
    True. There is no counterexample.
  • 3. Multiple Choice
    2 minutes
    1 pt
    If it is a number, then it is either positive or negative. What is an appropriate counterexample?
    10
    -2
    0
    True. There is no counterexample.
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