Statistics & Probability (IMO Mathematics Olympiad Class 10): Questions 39  45 of 80
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Question number: 39
» Statistics & Probability
Question
Two dice are thrown simultaneously. The probability of getting a total 5, 6 or 7 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 40
» Statistics & Probability
Question
The mean of five numbers is 18. If one number is excluded, then their mean is 16, the excluded number is ________
Choices
Choice (4)  Response  

a.  25 

b.  26 

c.  28 

d.  24 

Question number: 41
» Statistics & Probability
Question
The average age of 5 teachers is 28 years. If one teacher is excluded the mean gets reduced by 2 years. The age of the excluded teacher is ________
Choices
Choice (4)  Response  

a.  33 years 

b.  36 years 

c.  35 years 

d.  26 years 

Question number: 42
» Statistics & Probability
Question
Two dice are thrown simultaneously. The probability of getting a doublet or a total of 8 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 43
» Statistics & Probability
Question
When two dice are thrown, the probability of getting a prime number as the sum is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 44
» Statistics & Probability
Question
A card is drawn from a wellshuffled pack of 52 cards. The probability that the card neither a black card nor a king is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 45
» Statistics & Probability
Question
A bag contains 6 blue and 4 green marbles. If a marble is drawn at random from the bag, the probability that the marble drawn is green, is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

