: Each of the 1,001 problems is accompanied by a thorough explanation of the techniques used, making it accessible even to students who struggle with abstract concepts.
By now, you have seen all 1,001 problems. Now, re-solve only the problems you marked as "wrong" or "slow." This is where the Excel Academic Council shines, because their solution manual explains why you made the mistake (e.g., "Students often forget to convert minutes to hours here"). : Each of the 1,001 problems is accompanied