Question : The value of $\sqrt{9-2 \sqrt{11-6 \sqrt{2}}}$ is closest to:

Option 1: 2.7

Option 2: 2.9

Option 3: 2.4

Option 4: 2.1

Question : The value of $\sqrt{11+2 \sqrt{18}}$ is closest to:

Option 1: 4.8

Option 2: 4.4

Option 3: 3.8

Option 4: 4.1

Question : If $\frac{1}{N}=\frac{(\sqrt6+\sqrt5)}{(\sqrt6-\sqrt5)}$, what is the value of $N$?

Option 1: $6-\sqrt{30}$

Option 2: $6+\sqrt{30}$

Option 3: $11-2\sqrt{30}$

Option 4: $11+2\sqrt{5}$

Question : The value of $\frac{1}{\sqrt{7-4 \sqrt{3}}}$ is closest to:

Option 1: 1.2

Option 2: 4.1

Option 3: 4.2

Option 4: 3.7

Question : The value of $\frac{1}{\sqrt{17+12 \sqrt{2}}}$ is closest to _____.

Option 1: 1.4

Option 2: 1.2

Option 3: 0.14

Option 4: 0.17

Question : The value of $\frac{1}{\sqrt{17+12 \sqrt{2}}}$ is closest to ______.

Option 1: 1.4

Option 2: 1.2

Option 3: 0.14

Option 4: 0.17