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2011 AMC 10B Problem 5

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2011 AMC 10B Problem 5AMC 10 Step by Step
Name:                             Date: September 13, 2026
Divisibility & Factors · difficulty 2 of 5 · about 2 min · position P1-10

In multiplying two positive integers aa and bb , Ron reversed the digits of the two-digit number aa . His erroneous product was 161161 . What is the correct value of the product of aa and bb ?

  1. A)

    116116

  2. B)

    161161

  3. C)

    204204

  4. D)

    214214

  5. E)

    224224

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