Number of one-one functions from A= {1, 2, 3, 4} to itself is :
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 24
No. of one-one functions from A where $n(A)=4$
$n(A)!=4!=24$
Number of one-one functions from A= {1, 2, 3, 4} to itself is :
Correct answer: option 2
The correct answer is Option (2) → 24
No. of one-one functions from A where $n(A)=4$
$n(A)!=4!=24$