Statistics & Probability (IMO Mathematics Olympiad Class 10): Questions 48  53 of 80
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Question number: 48
» Statistics & Probability
Question
The mean of 50 observations is 44. By error, one observation was noted as was misread as 56. Then the correct mean is ________
Choices
Choice (4)  Response  

a.  43.6 

b.  78.5 

c.  32.5 

d.  65.5 

Question number: 49
» Statistics & Probability
Question
Two dices are thrown simultaneously. The probability of getting a sum of 8 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 50
» Statistics & Probability
Question
In a single throws of a die, the probability of getting a number is greater than 2 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 51
» Statistics & Probability
Question
A bag contains Five green, four blue and Three orange marbles. If a marble is picked at random, then the probability that it is not an orange marble, is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 52
» Statistics & Probability
Question
When two dice are thrown, the probability of getting the odds in favour of getting the sum 5 is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 53
» Statistics & Probability
Question
The mean weight of a class of 34 students is kg. if the weight of the teacher is included, the mean rises by 500 g. Then the weight of the teacher is ________
Choices
Choice (4)  Response  

a.  62 kg 

b.  175 kg 

c.  64 kg 

d.  72 kg 
