The exponential form of $\sqrt{\sqrt{2}\times \sqrt{3}}$ is
1). 6
2). $6^{\frac{1}{2}}$
3). $6^{-\frac{1}{2}}$
4). $6^{\frac{1}{4}}$
1. If $3^{x+y}$=81 and $81^{x-y}$=3, then the value of x is
2. $\left(\sqrt{2}+\sqrt{7-2\sqrt{10}})\right)$ is equal to :
4. The approximate value of $\frac{3\sqrt{12}}{2\sqrt{28}}+\frac{2\sqrt{21}}{\sqrt{98}}$ is :
5. If $27^{2x-1}=(243)^{3}$ , then the value of x is
6. The greatest number among $\sqrt[3]{2}$ , $\sqrt{3}$ ,$\sqrt[3]{5}$,and 1.5 is :
9. $\left[\left\{\left(-\frac{1}{2}\right)^{2}\right\}^{-2}\right]^{-1}$ is equal to :
10. If $5\sqrt{5}\times 5^{3}+5^{-\frac{3}{2}}$=$5^{a+2}$ ,then the value of a is