1/2×3+1/3×4+1/4×5+…1/99×100=（ ）

Question

如题所述

Answer 1

不懂再问哈。。

Answer 2

1/2×3+1/3×4+1/4×5+…1/99×100
=1/2-1/3+1/3-1/4+...+1/99-1/100
=1/2-1/100
=49/100

Answer 3

1/2×3+1/3×4+1/4×5+…1/99×100
=1/2-1/3+1/3-1/4.....+1/99-1/100
=1/2-1/100
=49/100

Answer 4

1/2×3+1/3×4+1/4×5+…1/99×100
=1/2-1/3+1/3-1/4+1/4-1/5+……+1/99-1/100
=1/2-1/100
=49/100本回答被提问者采纳