[解題] 急問ㄧ題國中數學
1.年級:好像是國小升國中的題目 Orz
2.科目:數學
3.章節:分數的四則運算
4.題目:2*(1/3)+3*(1/4)+......49*(1/50)=??
我的想法是把前面拆成(3-1)*(1/3)+(4-1)*(1/4).....(50-1)*(1/50)=???
但是在來我就不知道怎麼辦了??
懇請高手賜教.....謝謝
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