# 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

4

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

4

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)

4

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

4

4,2

Explanation :
No Explanation available for this question

# 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)

4

Equal to P(A)+P(B)-P(A υ B)

Explanation :
No Explanation available for this question

# 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.

4

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.

4

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

4

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

4

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

4