1. What is the sum of the roots of a quadratic equation ax²+bx+c=0?

2. 20 men can do one work in 30 days. In how many days can 80 men finish the same work?

3. A cap is bought for Rs.200 and sold it for Rs.240. What is the profit percentage?

4. What is the H.C.F. of  a³+b³ and a⁴+a²b²+b⁴?

5. The radius of a circle is 4cm, distance from the external point to the center is 5cm, the length of tangent from external point is………

6. The number 225 is mistakely written as 275 . Find the percentage error?

7. If the length and breadth of a rectangle are 20cm and 12cm respectively then find its perimeter.

8. If n(A)=80 and n(B)=64, what is the least value of n(AUB)?

9. If 7x+2y=63 and 2z+7y=27, then find the value of x+y.

10. Find the value of: (14)⁶ *(15)⁵/(35)⁵ * (x)⁵

11. A square based pyramid has base area 100 sq. meter and total surface area is 360 sq. meter. What will be the area of its triangular faces?

12. The first quartile is calculated by the formula……?

13. If A & B can do a piece of work in 8 days and 12 days respectively, how many part of the work do they work together in 4 days?

14. If aˣ⁻³= (a/a)ˣ⁻¹. What is the value of x?

15. If x+y=10 and x-y=11, what is the value of x²-y²?

16. What is the yearly compound amount on Rs.5000 for 2 years at the rate of 10% P.A?

17. The length of a diagonal of a square is 3√2 cm. What will be the area of the square?