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2018 AMC 10B Problem 8

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2018 AMC 10B Problem 8AMC 10 Step by Step
Name:                             Date: September 13, 2026
Sequences & Series · difficulty 2 of 5 · about 3 min · position P1-10

Sara makes a staircase out of toothpicks as shown:

figure

This is a 33 -step staircase and uses 1818 toothpicks. How many steps would be in a staircase that used 180180 toothpicks?

  1. A)

    1010

  2. B)

    1111

  3. C)

    1212

  4. D)

    2424

  5. E)

    3030

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