Oracle queries for the rownum, rank to find the nth highest salary

Find the 2nd highest data in SQL:

SELECT MAX(balance) FROM mtx_wallet_balances WHERE balance NOT IN (SELECT MAX(balance) FROM mtx_wallet_balances )

SELECT MAX(balance) FROM mtx_wallet_balances WHERE balance <> (SELECT MAX(balance) FROM mtx_wallet_balances)

Find the nth highest data in Oracle using rownum:

select * from ( select mwb.*, row_number() over (order by balance DESC) rownumb from mtx_wallet_balances mwb ) where rownumb = 105;

Find the nth highest data in Oracle using RANK:

SELECT * FROM (SELECT balance, RANK () OVER (ORDER BY balance DESC) ranking FROM mtx_wallet_balances) WHERE ranking = 105;