# The number of non-zero terms in the expansion of (1+3√2x)9+(1+3√2x)9is equal to:

1.  0

2.  5

3.  9

4.  10

4

5

Explanation :
No Explanation available for this question

# The unit vector perpendicular to each of

1.  (-3,5,11)/155

2.  (-3,5,11)/√155

3.  (3,5,11)/√155

4.  (3,-5,11)/√155

4

(-3,5,11)/√155

Explanation :
No Explanation available for this question

# The probabilities of problem being solved by two students are 1/2 and 1/3.Find the probability of the problem being solved.

1.  2/3

2.  1

3.  4/3

4.  1/3

4

2/3

Explanation :
No Explanation available for this question

# The length of the latusrectum of an ellipse is 1/3 of the major axis.It's e is:

1.  2/3

2.  √(2/3)

3.  5.4.3/73

4.  (3/4)4

4

√(2/3)

Explanation :
No Explanation available for this question

# If the mean and variance of a binomial distribution are 15/4 and 15/6.The number of trails are:

1.  2

2.  4

3.  5

4.  6

4

5

Explanation :
No Explanation available for this question

# The locus represented by |z-1|=|z+i| is:

2.  an ellipse with focii at 1 & -i

3.  a straight line through the origin

4.  a circle on the line joining 1 and i as diameter

4

a straight line through the origin

Explanation :
No Explanation available for this question

# The equation of the circle passing through (2,1) and touching the co-ordinate axis is:

1.  x2+y2-2x-2y+1=0

2.  x2+y2+2x+2y+1=0

3.  x2+y2-2x-2y-1=0

4.  x2+y2+2x-2y-1=0

4

x2+y2-2x-2y+1=0

Explanation :
No Explanation available for this question

# The students while solving a quadratic equation in x,one copied the constant term incorrectly and got the roots 3 and 2.The other copied the constant term and coeffient of x2 as -6 and 1 respectively.The correct roots are:

1.  3,-2

2.  -3,2

3.  -6,-1

4.  6,-1

4

6,-1

Explanation :
No Explanation available for this question

# A circle touches the x-axis and also touches the circle with centre (0,3) and radius 2. The locus of the centre of the circle is

1.  a circle

2.  a parabola

3.  an ellipse

4.  a hyperbola

4

a parabola

Explanation :
No Explanation available for this question

# The value of the integral

1.  e√x-4√x e√x+C

2.  2√xe√x-4√xe√x+C

3.  2x√xe√x-4√xe√x+4√xe√x+C

4.  none of these

4