The function $\mathrm { f } : \mathrm { N } - \{ 1 \} \rightarrow \mathrm { N }$; defined by $f ( \mathrm { n } ) =$ the highest prime factor of $n$, is: (1) both one-one and onto (2) one-one only (3) onto only (4) neither one-one nor onto
The function $\mathrm { f } : \mathrm { N } - \{ 1 \} \rightarrow \mathrm { N }$; defined by $f ( \mathrm { n } ) =$ the highest prime factor of $n$, is:\\
(1) both one-one and onto\\
(2) one-one only\\
(3) onto only\\
(4) neither one-one nor onto