1 
Four fourth roots of 625 are: 
 A. ±5,±5i
 B. ±5,±25i
 C. ±25,±25i
 D. none of these

2 


3 
The ration of the sum and product of roots of 7x<sup>2</sup>  12x + 18 = 0 is: 
 A. 7:12
 B. 2:3
 C. 3:2
 D. 7:18

4 
For what value of k, the roots of the equation x<sup>2</sup> + √k x + 2 = 0 are equal: 

5 
No. of ways of solving a quadratic equation: 

6 

 A.
 B.
 C.
 D. none of these

7 
Equations having a common solution are called: 
 A. linear
 B. quadratic
 C. homogeneous
 D. simultenaeous

8 
If α, ß are complex cube roots of unity, then 1 + α<sup>n</sup> + ß<sup>n</sup> = .......... where n is a positive integer divisible by 3: 

9 
Sum of roots of ax<sup>2</sup> + bx + c = 0 is equal to product of roots only if: 
 A. a+c=0
 B. b+c=0
 C. a+b=0
 D. a+b+c=0

10 
If α, ß are the roots of x<sup>2</sup> + kx + 12=0 such that αß = 1 then K = : 
