## Precalculus (6th Edition) Blitzer

$\frac{16!}{2! 14!}$ Try to reduce the fraction before performing the multiplications. We can express 16! as 16! = 16*15*14!. We can divide both the numerator and the denominator by the common factor, 14!. $\frac{16!}{2! 14!}$ = $\frac{ 16*15*14!}{2*1*14!}$ = $\frac{16*15}{2}$= 120