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

View Answer  
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

View Answer  
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

View Answer  
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

View Answer  
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

View Answer  
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

View Answer  
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

View Answer  
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)

View Answer  
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

View Answer  
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

View Answer  
4
Correct Answer :

x2 + y2 + z2 – 10x – 10y + 10z + 25=0


Explanation :
No Explanation available for this question
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