Approximate value of pi is

Twice the difference between two numbers is equal to their sum. If one number is $15$, Find the other number.

1. $15$
2. $10$
3. $5$
4. $20$

The sum of three consecutive numbers is $126$. Find the highest number-

1. $41$
2. $42$
3. $43$
4. $44$

How many times does the number $3$ occur in unit's place for numbers ranging from $1$ to $100$?

1. $20$
2. $11$
3. $10$
4. $19$

The wheels of a car are of diameter $80 \mathrm{c}\mathrm{m}$ each. How many complete revolutions does each wheel make in 10 minutes when the car is traveling at a speed of $66 \mathrm{k}\mathrm{m}$ per hour? $\left(\mathrm{use} \pi =\frac{22}{7}\right)$

1 USD = Rs. 67.89. A money changer adds a margin of Rs. 1.11. What will be the cost of 150 USD ? 

1. Rs. 10,183
2. Rs. 10,350
3. Rs. 10,330
4. Rs. 10,450

Find the area in square centimeter of the shaded region in the given figure, where $ABCD$ is a square of side $14 \mathrm{cm}$. [Take $\pi =\frac{22}{7}$]