Seven white balls and three black balls are randomly placed in a row. Find the probability that no two black balls are placed adjacent to each other.

1.  7/15  

2.  2/15

3.  3/7  

4.  2/3.

View Answer  
4
Correct Answer :

7/15

 


Explanation :
No Explanation available for this question

A fair coin is tossed repeatedly. If Head appears on the first four tosses then the probability of appearance of tail on the fifth toss is

1.  1/7  

2.  1/2

3.  3/7  

4.  2/3.

View Answer  
4
Correct Answer :

1/2


Explanation :
No Explanation available for this question

The letters of the word ‘article’ are arranged at random. Find the probability that the vowels may occupy the even places.

1.  2/35  

2.  1/35

3.  3/36  

4.  2/34.

View Answer  
4
Correct Answer :

1/35


Explanation :
No Explanation available for this question

What is the probability that four Ss come consecutively in the word MISSISSIPPI

1.  4/165  

2.  2/165

3.  3/165  

4.  1/165.

View Answer  
4
Correct Answer :

4/165

 


Explanation :
No Explanation available for this question

Eleven books, consisting of five Engineering books, four Mathematics books and two Physics books, are arranged in a shelf at random. What is the probability that the books of each kind are all together

1.  5/1155  

2.  2/1155

3.  3/1155  

4.  1/1155.

View Answer  
4
Correct Answer :

1/1155.


Explanation :
No Explanation available for this question

Three students appear at an examination of Mathemat­ics. The probability of their success are 1/3, 1/4, 1/5 respectively. Find the probability of success of at least two.

1.  1/6  

2.  2/5

3.  3/4  

4.  3/5.

View Answer  
4
Correct Answer :

1/6

 


Explanation :
No Explanation available for this question

A bag contains 8 white and 4 red balls. Five balls are drawn at random. What is the probability that two of them are red and 3 are white

1.  12/14  

2.  14/33

3.  14/34  

4.  15/34.

View Answer  
4
Correct Answer :

14/33


Explanation :
No Explanation available for this question

A team of 4 is to be constituted out of 5 girls and 6 boys. Find the probability that the team may have 3 girls.

1.  4/11  

2.  3/11

3.  5/11  

4.  2/11.

View Answer  
4
Correct Answer :

2/11.


Explanation :
No Explanation available for this question

12 persons are seated around a round table, What is the probability that two particular persons sit together

1.  2/11  

2.  1/6

3.  3/11  

4.  3/15.

View Answer  
4
Correct Answer :

2/11

 


Explanation :
No Explanation available for this question

Six boys and six girls sit in a row randomly; Find the probability that all the six; girls sit together.

1.  3/22  

2.  1/132

3.  1/1584  

4.  1/66.

View Answer  
4
Correct Answer :

1/132


Explanation :
No Explanation available for this question
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