SSC CHSL 2024 PYQ — Question 67

The correct answer is Option 1 i.e. $\frac{64}{21}$.

$3 \frac{4}{7} - \left[16 \frac{1}{2}\div \left\{6^2 - \left(7 - 2 \frac{1}{2}\right) \right\}\right]$

⇒ $\frac{25}{7} - \left[\frac{33}{2}\div \left\{36 - \left(7 - \frac{5}{2}\right) \right\}\right]$

⇒ $\frac{25}{7} - \left[\frac{33}{2}\div \left\{36 - \left(\frac{9}{2}\right) \right\}\right]$

⇒ $\frac{25}{7} - [\frac{33}{2}\div (\frac{63}{2})]$

⇒ $\frac{25}{7} - [\frac{33}{2}\times (\frac{2}{63})]$

⇒ $\frac{25}{7} - [\frac{11}{21}]$

⇒ $\frac{75}{21} - \frac{11}{21}$ = $\frac{64}{21}$