If the points (0,0), (2,0), (0,4), (1,k) are concyclic then k2-4k=

1.  -1

2.  1

3.  0

4.  -3

4

1

Explanation :
No Explanation available for this question

If the mean and varience of a binomial distribution are 15/4 and 15/6.The number of trails is

1.  5

2.  2

3.  4

4.  6

4

5

Explanation :
No Explanation available for this question

The probability of getting two heads when an unbiased coin is tossed three times is

1.  1/4

2.  1/3

3.  1/2

4.  1/8

4

1/2

Explanation :
No Explanation available for this question

The number of parameters of B.D are

1.  4

2.  3

3.  2

4.  1

4

2

Explanation :
No Explanation available for this question

1.  8

2.  1

3.  0

4.  -1

4

1

Explanation :
No Explanation available for this question

1.  5

2.  3

3.  2i

4.  2+i

4

5

Explanation :
No Explanation available for this question

1.  11

2.  2

3.  4

4.  -4

4

-4

Explanation :
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1.  r = y = -z

2.  -r = y = z

3.  r = -y = z

4.  r = y = z

4

r = y = -z

Explanation :
No Explanation available for this question

1.  1/17

2.  -1/17

3.  17

4.  -17

4

17

Explanation :
No Explanation available for this question

1.  20/27

2.  6/5

3.  0

4.  1

4