Question : What is the value of x?
If x = 0.05 × 0.36 ÷ 0.4 + 0.055 + 1.50 ÷ 0.03

Option 1: 45.9

Option 2: 50.1

Option 3: 55.1

Option 4: 49.9

Question : What is the value of $x$?
$\frac{3}{2}× \frac{7}{3} ÷ \frac{7}{6}+\frac{1}{4}=\frac{1}{x}$

Option 1: $\frac{7}{12}$

Option 2: $\frac{4}{13}$

Option 3: $\frac{13}{4}$

Option 4: $\frac{6}{7}$

Question : What is the value of $\frac{7 \text { of } 14 ÷ 4}{5 × 4 ÷ 2}+\frac{6 ÷ 12 × 3}{5 ÷ 25 × 2}+\frac{15 ÷ 5 × 6}{5× 15 ÷ 6}$?

Option 1: 7.44

Option 2: 7.64

Option 3: 7.62

Option 4: 7.22

Question : What is the value of a?
If 15 + 18 ÷ 3 × 5 – 12 ÷ 4 + a = 100

Option 1: 54

Option 2: 58

Option 3: 48

Option 4: 42

Question : What is the value of $(x+1)\left(x^2-x+1\right)$ ?

Option 1: $x^3-1$

Option 2: ${x}^3+{x}$

Option 3: $x^3+1$

Option 4: ${x}^3-{x}$

Question : If $\sqrt {0.05\times 0.5 \times a } = 0.5 \times 0.05 \times \sqrt b$, then $\frac{a}{b}$ is equal to:

Option 1: 0.0025

Option 2: 0.025

Option 3: 0.25

Option 4: 0.00025