Answer
$\frac{1}{22}$
Work Step by Step
$\frac{1}{2}$, $\frac{1}{6}$, $\frac{1}{10}$, $\frac{1}{14}$, $\frac{1}{18}$
Every next fraction is increased by $\frac{1}{4}$ in previous fraction
So $\frac{1}{18}$ + $\frac{1}{4}$ = $\frac{1}{22}$
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