# The number of lines that can be formed from 12 points in a plane of which 6 lie on a line are:

1.  45

2.  52

3.  50

4.  46

4

52

Explanation :
No Explanation available for this question

# If |z-3+i| = 4 then the locus of z = x + iy is:

1.  x2+y2-6x+2y-6 = 0

2.  x2+y2-6 = 0

3.  x2+y2-3x+y-6 = 0

4.  x2+y2 = 0

4

x<sup>2</sup>+y<sup>2</sup>-6x+2y-6 = 0

Explanation :
No Explanation available for this question

1.  100

2.  199

3.  201

4.  200

4

201

Explanation :
No Explanation available for this question

# Log3√2324 =

1.  4

2.  6

3.  8

4.  3

4

4

Explanation :
No Explanation available for this question

# then a1-2a2+3a3-……..+(-1)

1.  0

2.  1

3.  n

4.  -n

4

-n

Explanation :
No Explanation available for this question

# 1 + 2/x + 3/x2+ ..... = 1/3 then x =

1.  (√3 + 1)/2

2.  (√3 - 1)/2

3.  1/3

4.  -1/3

4

(√3 - 1)/2

Explanation :
No Explanation available for this question

# If (x + 1)2/x3+ x = A/x + [(Bx + C)/(x2+ 1)] then sin-1(A/C) =

1.  π/6

2.  π/4

3.  π/3

4.  π/2

4

&#960;/6

Explanation :
No Explanation available for this question

# If [2+3i]/[(7-i)(4+2i)]=A+iB,then A2+B2 is equal to

1.  13/1000

2.  13/100

3.  17/100

4.  17/1000

4

13/100

Explanation :
No Explanation available for this question

# If n>1, then the product of all roots of unity is:

1.  0

2.  1

3.  (-1)n-1

4.  -1

4

(-1)<sup>n-1</sup>

Explanation :
No Explanation available for this question

# If α,β are the roots of equation ax2+bx+c = 0, then quadratic equation whose roots are α+β,αβ, is:

1.  a2x2+a(b-c)x+bc = 0

2.  a2x2+a(b-c)x-bc = 0

3.  ax2+(b+c)x+bc = 0

4.  ax2+(b+c)x-bc = 0

4