The simplified form of \(\frac{1}{6} + \frac{1}{{12}} + \frac{1}{{20}} + \frac{1}{{30}}\) is:

1
\(\frac{1}{4}\)
2
\(\frac{1}{3}\)
3
\(\frac{1}{2}\)
4
\(\frac{1}{5}\)

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