Find the value of $\frac{1}{6} + \frac{1}{12} + \frac{1}{20} + \frac{1}{30} + \frac{1}{42} + \frac{1}{56}$.

Options:

• A: $\frac{3}{8}$
• B: $\frac{1}{4}$
• C: $\frac{2}{7}$
• D: $\frac{5}{12}$

Related Practice Questions:

• If x - y = 5 and xy = 14, find the value of x³ - y³.
• If x + y = 12 and xy = 27, find the value of x³ + y³.
• If x² + 1/x² = 79, find the value of x + 1/x (positive value).
• If x² + 1/x² = 47, find the value of x + 1/x (positive value).