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Tuesday, March 8, 2016


1. Two persons A and B appear in an interview for two vacancies. If the probabilities of their selections are ¼ and 1/6 , respectively, then the probability that none of them is selected, is;
a. 5/8            
b. 5/12                                 
c. 1/12                                  
d. 1/24                                 
e. none of these

Directions (2- 4): Study the given information carefully and answer the questions that follow.
A basket contains 4 red, 5 blue and 3 green marbles.
2. If two marbles are drawn at random, what is the probability that both are red:
a. 3/7            
b. ½                           
c. 2/11                                  
d. 1/6                        
e. none of these

3. If three marbles are picked at random, what is the probability that at least one is blue:
a. 7/12                     
b. 37/44                   
c. 5/12                                  
d. 7/44                                 
e. none of these

4. If three marbles are picked at random, what is the probability that either all are green or all are red:
a. 7/44                     
b. 7/12                                 
c. 5/12                                  
d. 1/44                                 
e. none of these

5. What is the probability that a card drawn at random from a pack of 52 cards is either a king or a spade:
a. 17/52                   
b. 4/13                                 
c. 3/13                                  
d. 13/52                   
e. none of these

6. The probability of getting a composite number when a six-faced unbiased die is tossed is:
a. ¼               
b. 1/3                        
c. ½                           
d. 1                            
e. none of these

7. Two unbiased dice are thrown simultaneously .The probability of getting the sum divisible by 3, is:
a. 11/36                   
b. 12/36                   
c. 13/36                               
d. 17/36                   
e. none of these

8. The probability that a leap year selected at random contains 53 Sundays , is:
a. 7/366                   
b. 26/183                
c. 1/7                        
e. none of these

9. A number is chosen at random from the first 100 natural numbers. Find the probability that the number is odd or a  multiple of 8:
a. 62/100                
b. 47/100                
c. 67/100                 
d. 43/100                
e. none of these

10. Two dice are tossed once .Find the probability of getting the sum of scores on the dice as 5.
a. 1/6            
b. 1/35                                 
c. 1/9                        
d. 1/8                        
e. none of these

1.A, 2.D, 3.B, 4.D, 5.B, 6.B, 7.A, 8.D, 9.A, 10.C,

For Full Explanation Of Each Question CLICK HERE

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