Home
Class 10
MATHS
If f: A to B is a bijective function and...

If `f: A to B` is a bijective function and if `n(B)=7`, then n(A) is equal to

A

`7`

B

`49`

C

`1`

D

`14`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NUMBER AND SEQUENCES

    SURA PUBLICATION|Exercise Unit test|12 Videos
  • RELATIONS AND FUNCTIONS

    SURA PUBLICATION|Exercise Unit Test|14 Videos

Similar Questions

Explore conceptually related problems

If f: A to B is a bijective function and if n(A)=5 , then n(B) is equal to ____.

If f is a bijection from A to B , then n(A) =n(B)

If f and g are differentiable functions such that g^(')(a) =2 and g(a) = b and if fog is an identity function then f^(')(b) has the value equal 'to

If A and B are not disjoint sets then n(A cup B) is equal to

If n(A)=8 and n(A cap B)=2, then n((A cap B)' cap A) is equal to

Let f be a continuous, differentiable, and bijective function. If the tangent to y=f(x)a tx=a is also the normal to y=f(x)a tx=b , then there exists at least one c in (a , b) such that f^(prime)(c)=0 (b) f^(prime)(c)>0 f^(prime)(c)<0 (d) none of these

Let f be a continuous, differentiable, and bijective function. If the tangent to y=f(x)a tx=a is also the normal to y=f(x)a tx=b , then there exists at least one c in (a , b) such that (a) f^(prime)(c)=0 (b) f^(prime)(c)>0 (c) f^(prime)(c) (d) none of these

Let R be the set of real numbers. If f:R->R is a function defined by f(x)=x^2, then f is (a) injective but not surjective (b) surjective but not injective (c) bijective (d) none of these

If n(A)=50, n(B)=35, n(A cap B)=5," then n(A cup B) is equal to .........."