# The probability that in a month of march there will be 5 Wednesday is:

1.  1/4

2.  2/7

3.  3/7

4.  4/7

4
Correct Answer :

3/7

Explanation :
No Explanation available for this question

# A cubical die is thrown. The probability that 2 and 4 will turn up exactly 3 times each is:

1.  1/66

2.  ∠6/66

3.

4.  1

4
Correct Answer :

Explanation :
No Explanation available for this question

# Three Symmetrical dice are thrown. The probability of obtaining a sum of 17 points is:

1.  1/72

2.  1/54

3.  1/216

4.  5/216

4
Correct Answer :

1/72

Explanation :
No Explanation available for this question

# Two unbiased six faced dice are thrown. The probability that the sum of the numbers on their faces is a prime number greater than 5 is:

1.  1/6

2.  1/3

3.  2/9

4.  4/9

4
Correct Answer :

2/9

Explanation :
No Explanation available for this question

# Number of spheres drawn through the points (0, 0, 0), (1, 0, 0),(0, 1, 0),(1, 1, 0) are

1.  0

2.  5

3.  Infinite

4.  2

4
Correct Answer :

Infinite

Explanation :
No Explanation available for this question

# The intersection of the sphere x2+y2+z2+7x – 2y –z =13 and x2+y2+z2-3x+3y+4z=8 is the same as the intersection of one of the sphere and the plane

1.  X – 2y – 2z = 1

2.  x – 2y – z =1

3.  x – y- z = 1

4.  2x – y z=1

4
Correct Answer :

2x – y z=1

Explanation :
No Explanation available for this question

# The locus of a point which moves in such a way that the sum of the squares of its distances from six faces of a cube is constant is:

1.  Sphere

2.  Circle

3.  Plane

4.  Ellipse

4
Correct Answer :

Sphere

Explanation :
No Explanation available for this question

# The point equidistant from the points (-, 0, 0),(1, 0, 0),(0, 2, 0) and (0, 0, 3) is:

1.  (1, 2, 3)

2.  (1/2, 1, 3/2)

3.  (-1/2, -1, -3/2)

4.  (1, -2, 3)

4
Correct Answer :

(1/2, 1, 3/2)

Explanation :
No Explanation available for this question

# If (u, v, w) be the centre of the sphere which passes through the points (0, 0, 0), (0, 2, 0), (1, 0, 0) and (0, 0, 4) then u + v +w=

1.  3/2

2.  5/2

3.  7/2

4.  9/2

4
Correct Answer :

7/2

Explanation :
No Explanation available for this question

# The equation of the sphere with centre (5, 5, -5) and touching the coordinate axes is

1.  x2 + y2 + z2 – 10x – 10y + 10z + 5=0

2.  x2 + y2 + z2 – 10x + 10y – 10z – 10=0

3.  x2 + y2 + z2 – 10x – 10y + 10z + 25=0

4.  x2 + y2 + z2 – 10x – 10y + 10z + 10=0

4
Correct Answer :

x2 + y2 + z2 – 10x – 10y + 10z + 25=0

Explanation :
No Explanation available for this question

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