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2004 AMC 10B Problem 21

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2004 AMC 10B Problem 21AMC 10 Step by Step
Name:                             Date: September 13, 2026
Sequences & Series · difficulty 4 of 5 · about 6 min · position P21-25

Let 11 ; 44 ; 77 ; …\ldots and 99 ; 1616 ; 2323 ; …\ldots be two arithmetic progressions. The set SS is the union of the first 20042004 terms of each sequence. How many distinct numbers are in SS ?

  1. A)

    37223722

  2. B)

    37323732

  3. C)

    39143914

  4. D)

    39243924

  5. E)

    40074007

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