If m and n (n>l) are whole numbers such that $m^{n}$ =121.the value of $(m-1)^{n+1}$ is
1). 1
2). 10
3). 121
4). 1000
1. If $3^{2x-y}$=$3^{x+y}$=$\sqrt{27}$. then the value of $3^{x-y}$ will be
2. $\frac{2.3\times 2.3\times 2.3-1}{23\times 2.3+ 2.3+1}$ is equal to :
3. If $0.42\times 100^{k}$ = 42 , then the value of k is
6. If x= $1+\sqrt{2}+\sqrt{3}$ then the value of $\left(x+\frac{1}{x-1}\right)$ is
8. The value of $\frac{1}{1+\sqrt{2}+\sqrt{3}}+\frac{1}{1-\sqrt{2}+\sqrt{3}}$ is
10. The simplified form of $(16^{\frac{3}{2}}+16^{\frac{-3}{2}})$ is :