MathNet 2026 — Part 01 Question 94

I chose four fractions from $\frac{1}{2}$, $\frac{1}{4}$, $\frac{1}{6}$, $\frac{1}{8}$, $\frac{1}{10}$ and $\frac{1}{12}$, whose sum is $1$. What fractions did I not choose?