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2011 AMC 10B Problem 13

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2011 AMC 10B Problem 13AMC 10 Step by Step
Name:                             Date: September 13, 2026
Geometric Probability · difficulty 2 of 5 · about 2 min · position P11-15

Two real numbers are selected independently at random from the interval [−20,10][-20, 10] . What is the probability that the product of those numbers is greater than zero?

  1. A)

    19\frac{1}{9}

  2. B)

    13\frac{1}{3}

  3. C)

    49\frac{4}{9}

  4. D)

    59\frac{5}{9}

  5. E)

    23\frac{2}{3}

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