If A and B are two elements such that P(A)=2/3,P(B)=3/4,p(A∩B)=1/2,then P(AυB)=

1.  9/8

2.  11/12

3.  17/18

4.  7/12

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4
Correct Answer :

11/12


Explanation :
No Explanation available for this question

If A and B are two events such that p(AυB)=0.65,P(A∩B)=0.15, then

1.  0.6

2.  0.8

3.  1.2

4.  1.4

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4
Correct Answer :

1.2


Explanation :
No Explanation available for this question

If A,B,C are three events,then P[A ∩ (B υ C)]=

1.  P(A)+P(B)+P(C)-P(A ∩ B)-P(A ∩ C)

2.  P(A)+P(B)+P(C)-P(B)P(C)

3.  P(A ∩ B)+P(A ∩ C)-P(A ∩ B ∩ C)

4.  P(B ∩ C)+P(A ∩ B)-P(A ∩ B ∩ C)

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4
Correct Answer :

P(A ∩ B)+P(A ∩ C)-P(A ∩ B ∩ C)


Explanation :
No Explanation available for this question

The signal flow diagram of a system is shown in the given figure. The number of forward paths and the number of pairs of non-touching loops are respectively

1.  3,1

2.  3,2

3.  4,2

4.   2,4

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4
Correct Answer :

4,2


Explanation :
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If A and B are two arbitrary events,then P(A ∩ B) cannot be

1.  Less than P(A)+P(B)-1

2.  Greater than P(A)+P(B)

3.  Equal to P(A)+P(B)-P(A υ B)

4.  Equal to P(A)+P(B)+P(A υ B)

View Answer  
4
Correct Answer :

Equal to P(A)+P(B)-P(A υ B)


Explanation :
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If M and N are two events,then probability that exactly one of them occurs is not equal to

1.  P(M)+P(N)-2P(M ∩ N)

2.  P(M)+P(N)-P(M ∩ N)

3.  

4.  

View Answer  
4
Correct Answer :

P(M)+P(N)-P(M ∩ N)


Explanation :
No Explanation available for this question

If A and B are any two events then which one of the following pairs of events are mutually exclusive

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

There are three events A,B,C one of which must,and only one can happen,the odds are 8 to 3 against A,5 to 2 against B.The odds against C are

1.  43 to 34

2.  32 to 23

3.  34 to 13

4.  None of these

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4
Correct Answer :

43 to 34


Explanation :
No Explanation available for this question

There are two bags one of which contains 3 black and 4 white balls while others contains 4 black and 3 white balls.A die is cast,if the face 1 or 3 turns up,a ball is taken from first bag and if any other face turns up,a ball is choosen from second bag.The probability of choosing of black ball is

1.  11/21

2.  21/11

3.  12/21

4.  21/12

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4
Correct Answer :

11/21


Explanation :
No Explanation available for this question

An urn contain 5 red and 10 black balls.Eight of them are placed in another urn.The chance that the latter then contains 2 red and 6 black balls is

1.  140/429

2.  129/440

3.  139/420

4.  None of these

View Answer  
4
Correct Answer :

140/429


Explanation :
No Explanation available for this question
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