The two example queries will not return the same results in general.
If there are 2 values of n in the table with equal maximum frequencies (i.e. two modes), then the first query will return both top ranked values. The second query will return the maximum of the two top-ranked values.
Also, see:
select stats_mode(n) from t;
... which will return strictly one of the modes, although we can't predict which one.
SQL - Sometimes S-Q-L and sometimes Sequel. I myself prefer the spelled out version. Char - ALWAYS "Char". I've never dreamed somebody would pronounce it as "Car". Blob, Clob - Always pronounced as they are written. VI: ALWAYS "Vee-eye", I have never heard "Vie", at least not since my first UNIX experience in 1993.