1乘2⼀1+2乘3⼀1+······99乘100⼀1等于( )

2024-12-24 12:19:37
推荐回答(2个)
回答1:

=1/2+(1/2-1/3)+(1/3-1/4)+......+(1/99-1/100)
=1-1/100
=99/100

回答2:

99/100