Evaluate the following 12!/9!3!
\(\dfrac{12!}{9!3!}=\dfrac{12\times11\times10\times9!}{9!3!}=\dfrac{12\times11\times10}{3!}=\dfrac{6\times2\times11\times10}{3\times2\times1}=2\times11\times10=220\)
