[問題] AMC的數學問題
1/1*2 + 1/3*4 + 1/5*6 + 1/7*8 + 1/9*10
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1/6*10 + 1/7*9 + 1/8*8 + 1/9*7 + 1/10*6
這是學生突然拿來發問的問題@@
目前只想到將分子解成1/1-1/2+1/3-1/4+1/5-1/6+1/7-1/8+1/9-1/10
但是分母部分總覺得有技巧的能跟分子互砍
不知道板上有沒有老師可以幫忙解答 ^^"
感恩!!
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