Quadratic Equations (IMO Mathematics Olympiad Class 10): Questions 25  30 of 80
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Question number: 25
» Quadratic Equations
Question
If one roots of is twice the other root, and then the value of ‘b’ is ________
Choices
Choice (4)  Response  

a.  3 

b.  9 

c. 


d.  9 

Question number: 26
» Quadratic Equations
Question
Solve the equation by using quadratic formula, then x is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 27
» Quadratic Equations
Question
A convex polygon has 90 diagonals. The number of its sides is ________
Choices
Choice (4)  Response  

a.  19 

b.  15 

c.  14 

d.  10 

Question number: 28
» Quadratic Equations
Question
One of the two students, while solving a quadratic equation in x, copied the constant term incorrectly and got the roots 4 and 5. The other copied the constant term and coefficient of correctly as and respectively. The correct roots are
Choices
Choice (4)  Response  

a.  5, 4 

b. 


c. 


d. 


Question number: 29
» Quadratic Equations
Question
Two numbers whose sum is 10 and absolute value of whose difference is 4 are the roots of the equation ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 30
» Quadratic Equations
Question
For what value of ‘P’ the roots of P are equal
Choices
Choice (4)  Response  

a. 


b.  4, 1 

c.  6, 4 

d.  3, 8 
