The process can refer to the following dream house, but there is an error in the penultimate line of the dream house. 02' s 65438+39 cannot be changed into 3, so the following are all wrong. You can do the math yourself.

It is suggested that you can also extract the integers of false scores and simplify them later, so that it is easier to find pairwise combinations. Here, we should pay attention to the situation that the integer may be small MINUS the big one. Remember to return 1. For example, if it is not enough to subtract 17 from 3 in 20, add the integer 1 to 3 in 20 and subtract 30.

Cube of one+cube of two+cube of three up to cube of twenty-four? → Cubic summation formula

The square of = (1+2+3+...+24)? → Sum formula with arithmetic sequence: (the first term+the last term) × the number of terms ÷2.

=( 1+24)×24÷2 square

=300 squared

=300×300

=90000