(7.5 x 7.5 + 37.5 + 2.5 x 2.5) is equal to :
1). 100
2). 80
3). 60
4). 30
1. $\frac{12}{3+\sqrt{5}+2\sqrt{2}}$ is equal to
3. The square root of $\left(\frac{\sqrt{3}+\sqrt{2}}{\sqrt{3}-\sqrt{2}}\right)$ is :
5. $(16^{0.16}\times 2^{0.36})$ is equal to :
6. $(\sqrt{8}-\sqrt{4}-\sqrt{2})$ equals :
7. $\left(\sqrt{2}+\sqrt{7-2\sqrt{10}})\right)$ is equal to :
9. If m and n (n>l) are whole numbers such that $m^{n}$ =121.the value of $(m-1)^{n+1}$ is