AMC 10 Daily Practice - Probability

Complete problem set with solutions and individual problem pages

Problem 1 Easy

If five students, A, B, C, D and E, stand in a row to take pictures. The probability that A and B are adjacent is            .

  • A.

    \frac{4}{5}

  • B.

    \frac{3}{5}

  • C.

    \frac{2}{5}

  • D.

    \frac{1}{5}

Answer:C

P=\frac{{_4P_4} \cdot {_2P_2}}{{_5P_5}}=\frac{2}{5}.

Related Problems
Problem 2 AMC 10 Daily Practice - Probability
Problem 3 AMC 10 Daily Practice - Probability
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