you can use all the way to cauculate it, and if you are a middle school student you can do it , try do  it

3,3,8,8

5,5,5,1

0,0,0,0

the last one is the most difficuty.

sorry ,i think my question have no business of the english,but i don't know where can i issue it.

by the way,how to caculate the last one to be 24?

I am confused what the rule is too.

it's very easy,why not try it.

就是每一行,你可以用+-*/什么都可以,放在4个数之间,可以用括号,使结果等于24就行了,不过确实有些小难,我还没有想出来.