Maths - Online Test
Q1. If f: A → B
is a bijective function and if n(B) = 7 , then n(A)
is equal to
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. In an A.P., the first term is 1 and the common difference is 4. How many terms of the A.P. must be taken for their sum to be equal to 120 ?
Answer : Option C
Explaination / Solution:
Q3. If the roots of the
equation q2x2 + p2x
+ r2 = 0 are the squares of the roots of the equation qx2
+ px + r = 0 , then q, p, r are in
_____
Answer : Option B
Explaination / Solution:
Q4. A tangent is perpendicular to the radius at the
Answer : Option B
Explaination / Solution:
No Explaination.
Q5.
Consider four straight lines
(i) l1 : 3y = 4x + 5
(ii) l 2 : 4y = 3x −1
(iii) l3: 4y + 3x = 7
(iv) l 4 : 4x + 3y = 2
Answer : Option C
Explaination / Solution:
Q6. The electric pole subtends an angle of 30° at a point on the same level as its foot. At a second point ‘b’ metres above the first, the depression of the foot of the tower is 60° . The height of the tower (in metres) is equal to
Answer : Option B
Explaination / Solution:
Q7. A shuttle cock used for playing badminton has the shape of the combination of
Answer : Option D
Explaination / Solution:
Q8. A page is selected at random from a book. The probability that the digit at units place of the page number chosen is less than 7 is
Answer : Option B
Explaination / Solution:
Q9. Let f and g be
two functions given by
f = {(0,1),(2,
0),(3,−4),(4, 2),(5, 7)}
g = {(0, 2),(1, 0),(2,
4),(−4, 2),(7, 0)}
then the range of f
o g is
Answer : Option D
Explaination / Solution:
Q10. If A = 265 and
B = 2 64 + 2 63 + 2 62 + … + 20
which of the following is true?
Answer : Option D
Explaination / Solution:
