Section - Mathematics
A can lay railway track between two given stations in 20 days and B can do the same job in 12 days. With the help of C, they did the job in 2 days only. Then, C alone can do the job in
4\( \frac{8}{11} \) days
11 \( \frac{8}{11} \) days
9 \( \frac{8}{11} \) days
2 \( \frac{8}{11} \) days
The value of \(\sqrt{324}\) + \(\sqrt{0.0324}\) − \(\sqrt{8.41}\) is _____.
The value of \( \frac{2}{5} \) + \(\left(\frac{1}{1+\frac{5}{7}}\right)\)− \( \frac{2}{5} \) is
\( \frac{2}{7} \)
\( \frac{10}{17} \)
\( \frac{7}{12} \)
\( \frac{14}{13} \)
If cotA + cosA = p, cotA - cosA = q, then what is the value of p² - q²?