Let $A = \{ 1,2,3 \}$ and $f : A \rightarrow A$ be a function. How many one-to-one functions $f$ satisfy the condition $$f ( n ) \neq n$$ for every $n \in A$? A) 1 B) 2 C) 3 D) 4 E) 5
Let $A = \{ 1,2,3 \}$ and $f : A \rightarrow A$ be a function. How many one-to-one functions $f$ satisfy the condition
$$f ( n ) \neq n$$
for every $n \in A$?\\
A) 1\\
B) 2\\
C) 3\\
D) 4\\
E) 5