1-(2-3)-(4-5)-(6-7)-……-(98-99)奥数简便运算
1个回答
关注
展开全部
结果是501-(2-3)-(4-5)-(6-7)-……-(98-99)=1-(-1)-(-1)-……-(-1)=1+1+1+……+1=1x50=50
咨询记录 · 回答于2022-07-30
1-(2-3)-(4-5)-(6-7)-……-(98-99)奥数简便运算
结果是501-(2-3)-(4-5)-(6-7)-……-(98-99)=1-(-1)-(-1)-……-(-1)=1+1+1+……+1=1x50=50
1-(2-3)-(4-5)-(6-7)-……-(98-99)=1+1+1+...+1=5050个1