Question : Solve the following expression.
$456-\left(76+15^2\right)+\frac{3}{4} \text { of } \frac{76}{18} \div\left(\frac{19}{72 \times 24}\right)$

Option 1: 443

Option 2: 256

Option 3: 356

Option 4: 401

Question : Solve the following.
$\frac{24 \div \frac{3}{8} \text { of }(8+2 \times \overline{7-3})+\left[\frac{2}{11} \div \frac{4}{55}-\left\{\frac{5}{8}+\frac{6}{16}\right\}\right]}{32 \div \overline{15-7}+75 \div(6+15 \div 3+4)} $

Option 1: $\frac{23}{27}$

Option 2: $\frac{9}{2}$

Option 3: $\frac{11}{18}$

Option 4: $\frac{15}{19}$

Question : The value of $\left(5 \frac{1}{4} \div \frac{3}{7}\right.$ of $\left.\frac{1}{2}\right) \div\left(5 \frac{1}{9}-7 \frac{7}{8} \div 9 \frac{9}{20}\right) \times \frac{11}{21}-\left(5 \div 2\right.$ of $\left.\frac{1}{2}\right)$ is:

Option 1: $\frac{15}{28}$

Option 2: $-2$

Option 3: $\frac{35}{24}$

Option 4: $0$

Question : A student was asked to find the value of $\left[(\frac{4}{9} \div \frac{3}{5} \div \frac{3}{2}) \times \frac{9}{25}\right] ×{\left[\frac{2}{3} \text { of } \frac{4}{9} \div\left(3 \times \frac{3}{5} \text { of } \frac{4}{5}\right)\right]}{\frac{2}{3} \div \frac{3}{4} \text { of } 6}$ His answer was $\frac{2}{9}$.
What is the difference between his answer and the correct answer?

Option 1: $\frac{1}{12}$

Option 2: $\frac{1}{4}$

Option 3: $\frac{1}{24}$

Option 4: $\frac{1}{6}$

Question : Find the value of the following expression.
$\frac{\left[\frac{5}{8}-\left\{\frac{3}{8}-\left(\frac{5}{8}-\frac{3}{8}\right)\right\}\right] \text { of } 8.8-1.2}{4 \frac{1}{6} \div 2.5 \times 2 \div \frac{1}{6} \text { of } 60+\left(\frac{3}{4}-\frac{3}{8}\right)}$

Option 1: $5 \frac{22}{43}$

Option 2: $3 \frac{23}{67}$

Option 3: $4 \frac{44}{85}$

Option 4: $4 \frac{4}{5}$

Question : Simplify the following.
$81^{\frac{3}{4}}+[(20 \div 5 \text { of } 3 \times 6)+\{(8 \div 24 \text { of } 3) \times 4\}-10 \div 5]-\left(\frac{1}{32}\right)^{-\frac{2}{5}}$

Option 1: $24 \frac{1}{4}$

Option 2: $21 \frac{1}{9}$

Option 3: $27 \frac{4}{5}$

Option 4: $29 \frac{4}{9}$