One square is selected from an 8 x 8 chessboard. What is the probability that it is a square of size 2x2

1.  51/204

2.  49/204

3.  25/102

4.  13/27

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4
Correct Answer :

49/204



Explanation :
No Explanation available for this question

A bag contains 5 five-rupee coins, 8 two-rupee coins and 7 one-rupee coins. If four coins are drawn from the bag at random, then find the odds in favour of the draw yielding the maximum possible amount.

1.  1 : 968

2.  968:969

3.  1 : 969

4.  969 : 968

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4
Correct Answer :

1 : 968


Explanation :
No Explanation available for this question

Two numbers are selected from the set of numbers {3,6,9, 12, 15,.......99} at random. Find the probability that the sum of the two numbers selected is odd

1.  1/11

2.  17/33

3.  7/33

4.  2/11

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4
Correct Answer :

17/33



Explanation :
No Explanation available for this question

A bag contains 8 red and 4 blue balls and another bag contains 7 blue and 5 red balls. If one of the bags is selected at random and two balls are drawn at random from the bag thus selected, the probability that the two balls are of different colours is

1.  9/144

2.  135/144

3.  67/132

4.  65/132

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4
Correct Answer :

67/132


Explanation :
No Explanation available for this question

In a class, there are equal number of boys and girls.Two students are selected for a game. If the probability that two students are girls is 7/29, then find the strength of the class  

1.   15

2.  30

3.  90

4.  60

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4
Correct Answer :

30


Explanation :
No Explanation available for this question

Three balls are drawn at random, from an urn containing 5 yellow, 4 white and 3 blue balls, what is the probability that the three balls are of the same colour

1.  17/30

2.  13/30

3.  3/44

4.  3/11

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4
Correct Answer :

3/44


Explanation :
No Explanation available for this question

In a school there are 6 teachers, 10 boys and 4 girls. A team of 3 members is to be formed from these persons.Find the probability that the team contains 1 teacher, 1 boy and 1 girl.

1.  4/19

2.  15/19

3.  1/57

4.  56/57

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4
Correct Answer :

4/19


Explanation :
No Explanation available for this question

A and B pick up a card at random .from a well shuffled pack of cards, one after the other, replacing it every time till one of them gets a heart. If A begins the game,then the probability that the game ends with B is

1.  3/7

2.  4/7

3.  3/4

4.  1/4

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4
Correct Answer :

3/7


Explanation :
No Explanation available for this question

If the probability for X and Y to pass in an examination is 0.9 and 0.8 respectively, then find the probability that either X or Y fails.

1.  0.98

2.  0.28

3.  0.72

4.  0.02

View Answer  
4
Correct Answer :

0.28



Explanation :
No Explanation available for this question

Three mountaineers Arvind, Jayesh and Mohit are climbing up a mountain with their respective probabilities of reaching the summit being 1/3, 1/5 and 1/4 respectively. What is the probability that exactly one of them reaches the summit

1.  13/30

2.  17/30

3.  19/30

4.  11/30

View Answer  
4
Correct Answer :

13/30


Explanation :
No Explanation available for this question
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