Statistics and ProbabilityProbability of an Event (KVPY Stream SBSX (Class 12 & 1st Year B.Sc.) Math): Questions 1  4 of 5
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Question number: 1
» Statistics and Probability » Probability of an Event
Appeared in Year: 2012
Question
Let denote the sum of the first n positive integers. The numbers S_{1}, S_{2}, S_{3}, …, S_{99} are written on 99 cards. The probability of drawing a card with an even number written on it is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 2
» Statistics and Probability » Probability of an Event
Appeared in Year: 2012
Question
A purse contains 4 copper coins and 3 silver coins. A second purse contains 6 copper coins and 4 silver coins. A purse is chosen randomly and a coin is taken out of it. What is the probability that is a copper coin –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 3
» Statistics and Probability » Probability of an Event
Appeared in Year: 2013
Question
In a tournament with five teams, each team plays against every other team exactly once. Each game is won by one of the playing teams and the winning team scores one point, while the losing team scores zero. Which of the following is NOT necessarily true? (Model Paper)
Choices
Choice (4)  Response  

a.  There are at least two teams which have at most two points each. 

b.  There are at least two teams which have at least two points each 

c.  There are at most three terms which have at least three points each 

d.  There are at most four terms which have at most two points each. 

Question number: 4
» Statistics and Probability » Probability of an Event
Appeared in Year: 2015
Question
Let and let a subset of be chosen so that every pair of elements of A differ by at least 3. (For example, if , A can be , {2} or {1, 5} among others). When let the probability that be and let the probability that be . Then –
Choices
Choice (4)  Response  

a.  and 

b.  and 

c.  and 

d.  and 
