# 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

4

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

4

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

4

3

Explanation :
No Explanation available for this question

# Let If is paral

1.  0

2.  1

3.  -1

4.  2

4

0

Explanation :
No Explanation available for this question

1.  2π/3

2.  5π/6

3.  π/3

4.  π/6

4

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 )

4

( 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

4

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

4

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)

4

1 / (n + 1)

Explanation :
No Explanation available for this question

1.  11 / 25

2.  3 / 11

3.  1 / 11

4.  9 / 11

4