Question

If : → is a bijective function and if n(B)=7 then n(A)is equal to​

Answer 1

Answer:

7

Step-by-step explanation:

Since f:A→B is a bijective function.

Therefore,

n(B)=n(A)=7

it is because bijective means one one and onto

the function to be one one there atleast exist elements in A

which is equal to no.of elements of B