Let X be a set having 3 elements and Y be a set having 4 elements. If α is the number of one-one functions from X to Y and β is the number of onto functions from Y to X, then the value of (β−α) is

Let X be a set having 3 elements and Y be a set having 4 elements. If

1.	Let X be a set having 3 elements and Y be a set having 4 elements. If α is the number of one-one functions from X to Y and β is the number of onto functions from Y to X, then the value of (β−α) is
Answer» Let $X$ be a set having $3$ elements and $Y$ be a set having $4$ elements. If $α$ is the number of one-one functions from $X$ to $Y$ and $β$ is the number of onto functions from $Y$ to $X,$ then the value of $(β - α)$ is