Question : If the sum of the diagonals of a rhombus is $L$ and the perimeter is $4P$, find the area of the rhombus.

Option 1: $\frac{1}{4}\left(\mathrm{~L}^2-\mathrm{P}^2\right)$

Option 2: $\frac{1}{2}\left(\mathrm{~L}^2-4 \mathrm{P}^2\right)$

Option 3: $\frac{1}{4}\left(\mathrm{~L}^2+3 \mathrm{P}^2\right)$

Option 4: $\frac{1}{4}\left(\mathrm{~L}^2-4 \mathrm{P}^2\right)$

Question : Find the value of $\sqrt{\left[\left(13^2-8^2\right) \times 5+4\right]}$ :

Option 1: 22

Option 2: 24

Option 3: 26

Option 4: 23

Question : What is the value of $\left[\frac{1}{5}+\left\{\frac{1}{6}\right.\right.$ of $\left.\left.\left(\frac{42}{35} \div \frac{6}{25}\right)–\left(\frac{2}{7} \times \frac{6}{5} \div \frac{18}{42}\right)\right\}+\frac{19}{30}\right]$?

Option 1: $\frac{17}{15}$

Option 2: $\frac{13}{15}$

Option 3: $\frac{14}{15}$

Option 4: $\frac{11}{15}$

Question : The value of $\frac{1}{8} × \left[\frac{1}{5}\right.$ of $\left.\frac{11}{2} ÷\left\{\left(\frac{15}{3}-\frac{18}{6}\right)\right\}\right]$ is:

Option 1: $\frac{11}{160}$

Option 2: $\frac{11}{20}$

Option 3: $\frac{8}{11}$

Option 4: $\frac{11}{8}$

Question : What is the HCF of 225 and 425?

Option 1: 5

Option 2: 17

Option 3: 25

Option 4: 9