Aman's great-grandfather is 105 years old. Aman's father Ram Singh's age is \( \frac{1}{3} \) of his grandfather. Five years ago, when Aman was born, Ram Singh's mother was double the age of Ram Singh. What is the difference of age between Aman and Ram Singh?
\(\frac{3\sqrt{5}+\sqrt{125}}{\sqrt{80}+6\sqrt{5}}\)is:
a natural number
an irrational number
a rational number
an integer
The value of \(\sqrt{4}\) is: