Evaluate: $\sqrt{16} - \frac{1}{\sqrt{15}+\sqrt{16}} + \frac{1}{\sqrt{14}+\sqrt{15}} - \frac{1}{\sqrt{13}+\sqrt{14}} + \frac{1}{\sqrt{12}+\sqrt{13}} - \frac{1}{\sqrt{11}+\sqrt{12}}$ = ?

Question

Accepted Answer

Answer

$4 + \sqrt{11}$

Answer

$3 - \sqrt{11}$

Answer

$2 - \sqrt{11}$

Answer

$1 + \sqrt{11}$