IS OUR APPROACH RIGHT WHEN WE PLAN TO COMPLETE A/CS AND COSTING TILL LEAVE PERIOD AND THAN REMAINING 4 SUBJECTS IN 2 MONTHS AND BALANCE PERIOD FOR REVISION,AND ALSO AT THE SAME TIME REVISING WHATEVER IS DONE IN CLASSES BCOZ IT TAKES HARDLY HALF AN HOUR TO REVISE FOR AN LECTURE OF 3 HRS,BCOZ IF WE DONT IT MAY TAKE ATLEAST 2 HRS TO COMPLETE IT.KINDLY SUGGEST BOOKS IN WHICH THERE ARE MORE VARIETY AND MORE DIFFICULT PROBLEMS.