Answer
$\frac{1}{6}$
Work Step by Step
$\frac{1}{1}$, $\frac{1}{2}$, $\frac{1}{3}$, $\frac{1}{4}$, $\frac{1}{5}$
Every next fraction's denominator is obtained by adding 1 in previous fractions denominator
So next fraction $\frac{1}{5+1}$ = $\frac{1}{6}$