Get 10 and 11th records in the output using SQL in 5 ways ?

Could you expand a little more on the question a little bit more please. I understand that you have two tables, A and B, but... ok so what, are they related? do you want the data filtered for records on each one? What do you mean by "My records in this table are in such a way that Table A Table B 10 15 11 16 12 10 13 11"? That doesnt make sense.

For example to retrieve 5th to 10th rows in a table emp

select * from ( select A.*, rowid as R from emp A)
where R>=5 and R<=10

Method 1

Code
SELECT a,employee_id,last_name,first_name,salary FROM
(SELECT ROWNUM AS a,employee_id,last_name,first_name,salary FROM employees)
WHERE a BETWEEN 10 AND 11

Code
SELECT * FROM emp WHERE (rowed,0) IN (SELECT rowid,mod(rownum,5) FROM emp);