Statistics & Probability [IMO Level 1 Mathematics Olympiad (SOF) Class 10]: Questions 6  11 of 81
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Question number: 6
» Statistics & Probability
Question
The king, queen and jack of clubs are removed from a deck of 52 playing cards and then wellshuffled. One card is selected from the remaining cards. The probability of getting a club is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 7
» Statistics & Probability
Question
When two dice are thrown, the probability of getting a number always greater than 4 on the second dice is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 8
» Statistics & Probability
Question
Two dices are thrown simultaneously. The probability of getting sum of atleast 11 is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 9
» Statistics & Probability
Question
The mean of 20 observations is . By error, one observation was noted as was misread as 42. Then the correct mean is ________
Choices
Choice (4)  Response  

a.  21.5  
b.  28.3  
c.  29.5  
d.  26.5 
Question number: 10
» Statistics & Probability
Question
A Motor maintains an average speed of 60 km/hr while going from P to Q and maintains an average speed of 90 km/hr while coming back from Q to P. the average speed of the motor is ________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 11
» Statistics & Probability
Question
A die is thrown once. The probability of getting a number 3 or 4 is ________
Choices
Choice (4)  Response  

a.  0  
b. 
 
c. 
 
d.  1 