Let M={7,8,9}. Determine which of the following functions is invertible for f:M→M.
f = {(9,7),(9,8),(9,9)}
f = {(7,8),(7,9),(8,9)}
f = {(8,8),(8,7),(9,8)}
f = {(7,7),(8,8),(9,9)}
Correct Answer: B — f = {(7,8),(7,9),(8,9)}
Explanation:
No explanation is available for this question yet.
