If the product of first fifty positive consecutive integers be divisible by $7^{n}$. where n is an Integer. then the largest possible value of n is
1). 7
2). 8
3). 10
4). 5
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1. The value of $\sqrt{11+2\sqrt{30}}-\frac{1}{\sqrt{11+2\sqrt{30}}}$ is :
2. The value of $ [(0.87)^{2}+(0.13)^{2}(0.87)\times (0.26)]^{2013}$ is
3. $\sqrt{3\sqrt{3\sqrt{3.....}}}$ is equal to
4. If a = $7-4\sqrt{3}$ , then the value of $a^{\frac{1}{2}}+a^{-\frac{1}{2}}$ is :
5. $2\sqrt[3]{40}-4\sqrt[3]{320}+3\sqrt[3]{625}-3\sqrt[3]{5}$ is equal to :
6. The simplified value of $(0.2)^{3}\times 200+ 2000 of (0.2)^{2}$ is
7. The largest number among $\sqrt{2}$, $\sqrt[3]{3}$,$\sqrt[4]{4}$ is :
9. The value of $\frac{(243)^{\frac{n}{5}}\times 3^{2n+1}}{9^{n}\times 3^{n-1}}$ is
10. Among the numbers $\sqrt{2}$,$\sqrt[3]{9}$,$\sqrt[4]{16}$,$\sqrt[5]{32}$ ,the greatest one is :