# There are 25 st5amps numbered from 1 to 25 in a box. If a stamp is drawn at random from the box, the probability that the number on the stamp will be a prime number is

1.  7/25

2.  8/25

3.  9/25

4.  6/25

4

9/25

Explanation :
No Explanation available for this question

# The slopes of the lines passing through A(2, 0) and making an angle of 450 with the tangent at A to the circle x2 + y2 +4x-6y-12=0 is

1.  1/3, -3

2.  2, -1/2

3.  -2, -1/2

4.  1/7, -7

4

1/7, -7

Explanation :
No Explanation available for this question

# One letter is selected at random from the word PROBABILITY. The probability that it is a vowel is

1.  3/11

2.  4/11

3.  2/11

4.  5/11

4

4/11

Explanation :
No Explanation available for this question

# If the lines represented by 4x2 +12xy+ 9y2-6x-9y=1 are two tangents to a circle then its area is

1.  5∏/13

2.  ∏

3.  ∏/2

4.  11/14

4

11/14

Explanation :
No Explanation available for this question

# A lot consists of 12 good pencils, 6 with minor defects and 2 with major defects. A pencil is drawn at random. The probability that this pencil is not defective is

1.  3/5

2.  3/10

3.  2/5

4.  1/2

4

3/5

Explanation :
No Explanation available for this question

# If the lines x+ky+3=0 and 2x-5y+7=0 intersects the coordinates axes in concyclic points then k =

1.  -2/5

2.  -3/5

3.  3/2

4.  -5/3

4

-2/5

Explanation :
No Explanation available for this question

# In a book of 100 pages, if a page is opened at random, the probability that the number on it is a prime is

1.  1/2

2.  1/3

3.  1/4

4.  1/8

4

1/4

Explanation :
No Explanation available for this question

# Equation of the circle with centre on Y-axis and passing through the points (1, 0), (1,1) is

1.  x2 + y2 -y-1=0

2.  x2 + y2 –x-1=0

3.  x2 + y2 –x+1=0

4.  x2 + y2 –y+1=0

4

x2 + y2 -y-1=0

Explanation :
No Explanation available for this question

# A rod PQ of length 2a slides with its ends on the axis. Then the locus of the circumcentre of OPQ is

1.  x2 + y2 =2a2

2.  x2 + y2 =4a2

3.  x2 + y2 =3a2

4.  x2 + y2 =a2

4

x2 + y2 =a2

Explanation :
No Explanation available for this question

1.  1/25

2.  2/25

3.  3/25

4.  4/25

4