KVPY Stream SBSX (Class 12 & 1st Year BSC) Math: Questions 81  83 of 155
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 155 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 150.00 or
Question number: 81
» Statistics and Probability » Standard Deviation
Appeared in Year: 2014
Question
Let . A list of number has mean and standard deviation . A new list of numbers is made as follows: and for . The mean and the standard deviation of the list are and . Then which of the following is necessarily true?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 82
» Basic Mathematics » Geometry » Advanced Therorems and Properties
Appeared in Year: 2013
Question
Let be the diameter of a semicircle with centre . Let A be a variable point on the semicircle and B another point on the semicircle such that is parallel to . The value of for which the inradius of triangle is maximum, is – (Model Paper)
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 83
» Differential Calculus » Geometric Interpretation of Derivative » Tangents
Appeared in Year: 2013
Question
The sum of non – real roots of the polynomial equation . (Model Paper)
Choices
Choice (4)  Response  

a.  Equals 0 

b.  Has absolute value bigger than 1 

c.  Lies between 0 and 1 

d.  Lies between – 1 and 0 
