SSC CGL 2025 PYQ — Question 74

The correct answer is option 1 i.e. $({\sqrt{7} + \sqrt{3})^2} - {2\sqrt{21}}$.

$({\sqrt{7} + \sqrt{3})^2} - {2\sqrt{21}}$

⇒ ($\sqrt7$)² + ($\sqrt3$)² + 2 × $\sqrt7$ × $\sqrt3$ - 2$\sqrt21$

⇒ 7 + 3 + 2$\sqrt21$ - 2$\sqrt21$ = 10