Question : What is the value of $\frac{17-8 \times 5+4 \times 3}{5 \times 3 \div 6+2 \times 4} ?$

Option 1: $\frac{-25}{21}$

Option 2: $\frac{-22}{21}$

Option 3: $\frac{-5}{6}$

Option 4: $\frac{-8}{7}$

Question : What is the value of [7 ÷ 14 × 8 + (5 ÷ 15 × 6 - 4 × 3)]?

Option 1: - 4

Option 2: - 2

Option 3: - 6

Option 4: - 5

Question : $A=2^K×3^5$ and $B=2^5×3^7$. If the least common multiple of A and B is $2^8×3^7$, then what is the value of K?

Option 1: 6

Option 2: 8

Option 3: 9

Option 4: 3

Question : The value of $\frac{2}{3} \times \frac{6}{5} \times \frac{10}{4}+\frac{1}{8}-\frac{3}{8}$ is:

Option 1: $\frac{4}{3}$

Option 2: $\frac{3}{4}$

Option 3: $\frac{4}{7}$

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

Question : What is the value of $\frac{\left[\left(\frac{5}{7} \text { of } \frac{1}{12} \times \frac{1}{4}-\frac{1}{2} \times \frac{1}{8}\right)+\frac{5}{4} \times \frac{8}{15}-\frac{2}{3}\right]}{\frac{1}{2} \div \frac{1}{4}+\frac{1}{2}}$ ?

Option 1: $\frac{-5}{108}$

Option 2: $\frac{-4}{103}$

Option 3: $\frac{-4}{105}$

Option 4: $\frac{-2}{105}$