Statistics & Probability (IMO Mathematics Olympiad Class 10): Questions 30  35 of 80
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Question number: 30
» Statistics & Probability
Question
One card is drawn from a wellshuffled deck of 52 cards the probability of drawing an ace is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 31
» Statistics & Probability
Question
A bag contains 15 balls of two different colours, out of which x are Pink. One ball is drawn at random. If 5 more Pink balls are put in the bag, the probability of drawing a Pink ball now will be double that of the previous probability of drawing a Pink ball. Then, the value of x is ________
Choices
Choice (4)  Response  

a.  6 

b.  3 

c.  5 

d.  4 

Question number: 32
» Statistics & Probability
Question
The mean of is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

Question number: 33
» Statistics & Probability
Question
One card is drawn from a wellshuffled deck of 52 cards the probability of neither a Club nor a king is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 34
» Statistics & Probability
Question
The mean of six numbers is 15. If one number is excluded, then their mean is 17, the excluded number is ________
Choices
Choice (4)  Response  

a.  7 

b.  4 

c.  1 

d.  5 

Question number: 35
» Statistics & Probability
Question
Two dice are thrown at a time. The probability that the difference of the numbers shown on the dice is 2 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

