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2013 AMC 10B Problem 4

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2013 AMC 10B Problem 4AMC 10 Step by Step
Name:                             Date: September 13, 2026
Number Properties · difficulty 1 of 5 · about 2 min · position P1-10

When counting from 33 to 201201 , 5353 is the 51st51^\mathrm{st} number counted. When counting backwards from 201201 to 33 , 5353 is the nthn^\mathrm{th} number counted. What is nn ?

  1. A)

    146146

  2. B)

    147147

  3. C)

    148148

  4. D)

    149149

  5. E)

    150150

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