olymmath

AMC 10 2016a

AMC 10 2016.

Paper

Problem 1

  • Paper

What is the value of 11!−10!9!\dfrac{11!-10!}{9!} ? (A) 99(B) 100(C) 110(D) 121(E) 132\textbf{(A)}\ 99 \textbf{(B)}\ 100 \textbf{(C)}\ 110 \textbf{(D)}\ 121 \textbf{(E)}\ 132

Answer, solutions and source