Question : Simplify the given expression.
$18 \div 3$ of $2 \times 5+72 \div 18$ of $2 \times 3-4 \div 8 \times 2$

Option 1: $20$

Option 2: $\frac{20}{3}$

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

Option 4: $25$

Question : Simplify the following expression.
120 ÷ 15 of 4 + [11 × 4 ÷ 4 of {4 × 2 – (8 – 11)}]

Option 1: $\frac{120}{61}$

Option 2: $\frac{61}{120}$

Option 3: $3$

Option 4: $-3$

Question : Simplify the following.
$\frac{0.01 \times 0.01 \times 0.01+0.003 \times 0.003 \times 0.003}{0.05 \times 0.05 – 0.015 \times 0.05 + 0.015 \times 0.015}$

Option 1: $\frac{13}{25} \times 10^3$

Option 2: $\frac{13}{15} \times 10^{–3}$

Option 3: $\frac{13}{15} \times 10^3$

Option 4: $\frac{13}{25} \times 10^{–3}$

Question : Simplify the given expression.
$
\frac{432 \times 432+247 \times 247-432 \times 247}{432 \times 432 \times 432+247 \times 247 \times 247}
$

Option 1: $\frac{1}{259}$

Option 2: $\frac{1}{185}$

Option 3: $\frac{1}{679}$

Option 4: $\frac{1}{450}$

Question : Simplify the given expression.
$\frac{(326+222)^2-(326-222)^2}{(326 \times 222)}$

Option 1: 1

Option 2: 4

Option 3: 3

Option 4: 2