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calculus

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Robin randomly selects a number between 1 and 20. What is the probability that the number selected is the square of a natural number?

1/2
3/20
3/10
1/5
1/3

  • calculus -

    since there are only 1,4,9,16 that are squares, 4/20 = 1/5

  • calculus -

    Only 1,4,9,16
    4/20 = 1/5

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