来自石立岸的问题
计算1/1*2+1/2*3+1/3*4+1/4*5+1/5*6的简便计算方法
计算1/1*2+1/2*3+1/3*4+1/4*5+1/5*6的简便计算方法
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2020-05-14 16:46
计算1/1*2+1/2*3+1/3*4+1/4*5+1/5*6的简便计算方法
计算1/1*2+1/2*3+1/3*4+1/4*5+1/5*6的简便计算方法
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6
=1-1/6
=5/6