AMC 10 Step by Step
Log inSign up
Printable

2010 AMC 10A Problem 24

Include the solutionBack to the problem
2010 AMC 10A Problem 24AMC 10 Step by Step
Name:                             Date: September 13, 2026
Modular Arithmetic · difficulty 5 of 5 · about 12 min · position P21-25

The number obtained from the last two nonzero digits of 90!90! is equal to nn . What is nn ?

  1. A)

    1212

  2. B)

    3232

  3. C)

    4848

  4. D)

    5252

  5. E)

    6868

Working