Question : The value of 7 ÷ [5 + 1 ÷ 2 - {4 + (4 of 2 ÷ 4) + (5 ÷ 5 of 2)}] is:

Option 1: $7$

Option 2: $\frac{7}{2}$

Option 3: $-7$

Option 4: $-\frac{7}{2}$

Question : The value of $6 \frac{8}{15}÷\frac{7}{9}$ of $\left(1 \frac{1}{10}+5 \frac{1}{5}\right)+\frac{2}{5}÷7 \frac{1}{5}$ is:

Option 1: $\frac{25}{16}$

Option 2: $\frac{5}{14}$

Option 3: $\frac{25}{18}$

Option 4: $\frac{5}{18}$

Question : The value of $\frac{5-2 \div 4 \times[5-(3-4)]+5 \times 4 \div 2 \text { of } 4}{4+4 \div 8 \text { of } 2 \times(8-5) \times 2 \div 3-8 \div 2 \text { of } 8}$ is:

Option 1: $\frac{9}{8}$

Option 2: $\frac{9}{4}$

Option 3: $\frac{15}{32}$

Option 4: $\frac{89}{4}$

Question : If $x^2+\frac{1}{x^2}=\frac{7}{4}$ for $x>0$, what is the value of $(x^3+\frac{1}{x^3})$?

Option 1: $\frac{3\sqrt{3}}{5}$

Option 2: $\frac{3\sqrt{15}}{5}$

Option 3: $\frac{3\sqrt{15}}{8}$

Option 4: $\frac{3\sqrt{5}}{8}$

Question : The value of 5 ÷ [5 + 8 – {4 + (4 of 2 ÷ 4) – (2 ÷ 4 of 2)}] is:

Option 1: $\frac{20}{23}$

Option 2: $\frac{5}{8}$

Option 3: $\frac{5}{7}$

Option 4: $\frac{20}{29}$