IMO Level 1 Mathematics Olympiad (SOF) Class 10: Questions 280  285 of 968
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Question number: 280
Question
Find the value of ‘k’ if product of roots of is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 281
Question
If have a common root, then the value of ‘a’ is ________
Choices
Choice (4)  Response  

a. 


b. 


c.  Only 1 

d. 


Question number: 282
Question
In the Maths Olympiad of 2020 at Animal Planet, two representatives from the donkey’s side, while solving a quadratic equation, committed the following mistakes:

One of them made a mistake in the constant term and got the roots as 5 and 9.

Another one committed an error in the coefficient of x and he got the roots as 12 and 4
But in the meantime, they realized that they are wrong and they managed to get it right jointly. Find the quadratic equation.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 283
Question
Which of the statements given below is correct. If discriminant for equation is D________
Choices
Choice (4)  Response  

a.  Not determined 

b. 


c. 


d. 


Question number: 284
Question
If , then is equal to ________
Choices
Choice (4)  Response  

a. 


b. 


c.  0 

d.  5 

Question number: 285
Question
Which of the statements given below is correct. If discriminant for equation is D________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  D is not defined 
