1⼀1*2+1⼀2*3+1⼀3*4+.+1⼀99*100等于多少

2025-06-21 20:29:14
推荐回答(1个)
回答1:

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