Chapter 1: Relation and Function - 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. 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:
Q3. Let f (x) = 
then
then
Answer : Option C
Explaination / Solution:
Q4. If g =
{(1,1),(2, 3),(3, 5),(4, 7)} is a function given by g(x) = αx
+ β then the values of a and b are
Answer : Option B
Explaination / Solution:
Q5. f (x) = (x + 1)3 − (x −
1)3 represents a function which is
Answer : Option D
Explaination / Solution:
