$\sqrt{6+\sqrt{6+\sqrt{6+.....}}}$ is equal to
1). 3
2). 4
3). 5
4). 6
3. $\left\{(-2)^{(-2)}\right\}^{(-2)}$ is equal to :
4. What to the product of the roots of the equation $x^{2}-\sqrt{3}$=0
5. $\frac{12}{3+\sqrt{5}+2\sqrt{2}}$ is equal to
6. Which of the foUowing Is the largest number $\sqrt{2}$,$\sqrt[3]{3}$,$\sqrt[4]{4}$, $\sqrt[6]{6}$ ,
7. $55^{3} + 17^{3} - 72^{3} + 201960$ is equal to :
8. If $0.42\times 100^{k}$ = 42 , then the value of k is