1.  7

2.  -7

3.  1/7

4.  -1/7

View Answer  
4
Correct Answer :

-1/7


Explanation :
No Explanation available for this question

1.  2log|x|+c

2.  log|x|+c

3.  –log|x|+c

4.  -2log|x|+c

View Answer  
4
Correct Answer :

log|x|+c


Explanation :
No Explanation available for this question

If 2x-3y=5 and 3x-4y=7 are the equation of two diameters of a circle whose area is 154sq units, then the equation of the circle is

1.  x2+y2+2x-2y-47=0

2.  x2+y2-2x+2y-49=0

3.  x2+y2-2x+2y+47=0

4.  x2+y2-2x+2y-47=0

View Answer  
4
Correct Answer :

x2+y2-2x+2y-47=0


Explanation :
No Explanation available for this question

If the center of the circle 2x2+pxy+qy2+2gx+2fy+3=0 is (1,-3) then the radius of the circle is

1.  17/2

2.  2√7

3.  17

4.  √(17/2)

View Answer  
4
Correct Answer :

√(17/2)


Explanation :
No Explanation available for this question

The probability of a man hitting the target is 1/4. If he fires 7 times the probability of his hitting the target atleast once is

1.  (3/4)7

2.  1-(3/4)7

3.  (1/4)7

4.  1-(1/4)7

View Answer  
4
Correct Answer :

1-(3/4)7


Explanation :
No Explanation available for this question

For a binomial distribution mean is 6 and S.D. is √2. The distribution is

1.  [(2/3)+(4/3)]9

2.  [(1/3)+(2/3)]9

3.  [(1/5)+(4/5)]9

4.  [(4/5)+(1/5)]9

View Answer  
4
Correct Answer :

[(1/3)+(2/3)]9


Explanation :
No Explanation available for this question

A and B play a game in which As chance of winning is 1/5. In a series of 6 games, the probability that A will win atleast three games is

1.  6C3(1/5)x(4/5)6-x

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

If for a binomial distribution n=4 and 6P(X=4)=P(X=2), the probability of success is

1.  3/4

2.  1/2

3.  1/3

4.  1/4

View Answer  
4
Correct Answer :

1/2


Explanation :
No Explanation available for this question

Six unbiased coins are tossed once. The probability of obtaining atleast two heads is

1.  63/64

2.  57/64

3.  1/64

4.  1/32

View Answer  
4
Correct Answer :

57/64


Explanation :
No Explanation available for this question

For a binomial distribution if p=1/4, n=20 the probability of mode is

1.  20C5(3/4)5

2.  20C5(1/4)5(3/4)15

3.  10C10(1/4)10(3/4)10

4.  10C10(3/4)10

View Answer  
4
Correct Answer :

20C5(1/4)5(3/4)15


Explanation :
No Explanation available for this question
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