If the angles made by a straight line with the coordinate axes are α, π/2-α, β then β=

1.  π/6

2.  π/2

3.  π

4.  0

View Answer  
4
Correct Answer :

π/2


Explanation :
No Explanation available for this question

A plane passes through (2, 3, -1) and is perpendicular to the line having direction ratios ( 3, -4, 7). The perpendicular distance from the origin to this plane is

1.  13/√74

2.  3/√74

3.  5/√74

4.  6/√74

View Answer  
4
Correct Answer :

13/√74


Explanation :
No Explanation available for this question

The radius of the circle given by x2 + y2 + z2 + 2x - 2y - 42 - 19  = 0 =  x + 2y + 2z + 7, is

1.  3

2.  2

3.  1

4.  4

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

Let If is paral

1.  0

2.  1

3.  -1

4.  2

View Answer  
4
Correct Answer :

0


Explanation :
No Explanation available for this question

If three unit vectorssatisfy

1.  2π/3

2.  5π/6

3.  π/3

4.  π/6

View Answer  
4
Correct Answer :

2π/3


Explanation :
No Explanation available for this question

If the angle θ between the vectorsis such that 900< θ < 1800 then x lies in the i

1.  ( 0, 1/2 )

2.  (1/2, 1 )

3.  ( 1, 3/2 )

4.  ( 1/2, 3/2 )

View Answer  
4
Correct Answer :

( 0, 1/2 )


Explanation :
No Explanation available for this question

Let OA, OB, OC be the co-terminal edges of a rectangular parallelopiped of volume V and let P be the vertex opposite to O. Then

1.  2 V

2.  12 V

3.  3√3 V

4.  0

View Answer  
4
Correct Answer :

2 V


Explanation :
No Explanation available for this question

An urn A contains 3 white and 5 black balls. Another urn B contains 6 white and 8 black balls. A ball is picked from A at random and then transferred to B. Then a ball is picked at random from B. The probability that it is a whit

1.  14 / 40

2.  15 / 40

3.  16 / 40

4.  17 / 40

View Answer  
4
Correct Answer :

17 / 40


Explanation :
No Explanation available for this question

If A (i = 1, 2, 3 ......, n) are n independent events with P(Ai) - 1 / (1 + i)  for each i, then the probability that none of Ai occurs is

1.  (n - 1) / (n + 1)

2.  n / (n + 1)

3.  n / (n + 2)

4.  1 / (n + 1)

View Answer  
4
Correct Answer :

1 / (n + 1)


Explanation :
No Explanation available for this question

Suppose A and  B  are  two events such that  P(A

1.  11 / 25

2.  3 / 11

3.  1 / 11

4.  9 / 11

View Answer  
4
Correct Answer :

11 / 25


Explanation :
No Explanation available for this question
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