1.

Find the value of \[\left( \frac{1}{2}+\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+\frac{1}{30}+\frac{1}{42} \right.\]\[\left. \frac{1}{56}+\frac{1}{72}+\frac{1}{90}+\frac{1}{110}+\frac{1}{132} \right)=?\]

A. \[\frac{12}{11}\]
B. \[\frac{11}{12}\]
C. \[0\]
D. \[\frac{13}{12}\]
Answer» C. \[0\]


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