1. If Sin2A=Cos4A find value of A.

2. What length of carpet of width 1.5m will be required to cover the floor a room of length 6m and breadth 4m?

3. A machine of 12,000 is depreciate at 10% per annum. Find the value of machine after one year.

4. In how many years the population of any town A will be double if the annual population growth rate is 2%?

5. If ײ+1/×= 1 Find the value of ×³+1/׳

6. Find the area of the annulus having the inner radius 7cm and outer radius 14cm.

7. What is the formula of cell charge?

8. If the area of equilateral triangle is 16√3 cm square on, find its perimeter.

9. Factorize of x³-x²-x+1 are

10. Expand: (x-1/x)³

11. Factorize a⁴-b⁴

12. If £ 15 =$ 20 and $5= Rs.390. Find the number of pounds that can be exchanged for Rs.31200.

13. Find the value of ׳+1/׳ if ×+1/×=5

14. The present population of a town is 30,000. What was the population of the town before 2 years ago if the annual growth rate 3%?

15. Find the value of √× + 1/√× if ×+1/×=2

16. Factors of x²-y²+2y-1 are