2016 AMC 12A Problems/Problem 1
Problem
What is the value of 
?
Solution
![\[\frac{11!-10!}{9!} = \frac{11!}{9!} - \frac{10!}{9!}\]](http://latex.artofproblemsolving.com/4/b/7/4b7f9aefc4bc405d52960b5bf8683575f9b88127.png)
![\[\frac{11\cdot 10\cdot 9!}{9!} - \frac{10\cdot 9!}{9!}\]](http://latex.artofproblemsolving.com/3/6/6/366041bef8c462b6f407fa838c69ab20ef2babbb.png)
![\[(11\cdot 10) - 10\]](http://latex.artofproblemsolving.com/c/6/f/c6f406ff7bba8c281183fb5149a6a3e9022272bc.png)
![\[\boxed{\textbf{(b) } \, 100}\]](http://latex.artofproblemsolving.com/f/2/b/f2b2f56c836f5fc4856ae9bcc23ebc2805266ee2.png)
See Also
| 2016 AMC 12A (Problems • Answer Key • Resources) | |
| Preceded by First Problem |
Followed by Problem 2 |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | |
| All AMC 12 Problems and Solutions | |
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions. 
