A and B toss a coin alternatively till one of them gets a head and wins the game. The probability of A’s winning if A starts the game is

1.  1/2

2.  1/3

3.  2/3

4.  1/4

View Answer  
4
Correct Answer :

2/3


Explanation :
No Explanation available for this question

If A and B are two events such that P(A)=1/4,P(B)=1/2 and P(A∪B)=5/8 then P(A∩B)=

1.  3/8

2.  1/8

3.  2/8

4.  5/8

View Answer  
4
Correct Answer :

1/8


Explanation :
No Explanation available for this question

If one root of px2-14x+8=0 is 6 times the other,then p=

1.  3

2.  -3

3.  2

4.  1

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

Two cards are drawn at random from 10 cards numbered 1 to 10. The probability that their sum is odd, if the  two cards are drawn together is

1.  2/9

2.  4/9

3.  5/9

4.  3/9

View Answer  
4
Correct Answer :

5/9


Explanation :
No Explanation available for this question

From a well shuffled pack of 52 playing cards 4 cards are drawn one at a time without replacement at random. The probability that they are aces is

1.  4/133

2.  24/133

3.  4/52x3/51x2/50x1/49

4.  12/133

View Answer  
4
Correct Answer :

4/52x3/51x2/50x1/49


Explanation :
No Explanation available for this question

If the quadratic equations ax2+2cx+b=0 and ax2+2bx+c=0,(b≠c)have a common root,then a+4b+4c=

1.  -2

2.  -1

3.  0

4.  1

View Answer  
4
Correct Answer :

0


Explanation :
No Explanation available for this question

If two symmetrical dice are thrown, the probability that atleast one of the dice shown a number greater than 3 is

1.  1/2

2.  1/4

3.  3/4

4.  1/8

View Answer  
4
Correct Answer :

3/4


Explanation :
No Explanation available for this question

If x-2 is a common factor of the expressions x2+ax+b and x2+cx+d then b-d/c-a=

1.  -2

2.  -1

3.  1

4.  2

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

An urn contains 25 balls numbered 1 through 25. Two balls are drawn from the urn with replacement. The probability that both the balls drawn have odd numbers on them is

1.  26/625

2.  69/625

3.  169/625

4.  126/625

View Answer  
4
Correct Answer :

169/625


Explanation :
No Explanation available for this question

If the equation x2-11x+a=0 and x2-14x+2a=0 have a common root,then a=

1.  0,18

2.  0,30

3.  18,30

4.  0,24

View Answer  
4
Correct Answer :

0,24


Explanation :
No Explanation available for this question
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