1÷(1×2)+1÷(2×3)+1÷(3×4)+~~~~~~~~~1÷(98×99

等于多少
2024-12-16 23:19:07
推荐回答(3个)
回答1:

=(1-1/2)+(1/2-1/3)+(1/3-1/4)+.......+(1/98-1/99)
=1-1/99
98/99

回答2:

1-1/99=98/99

回答3:

98/99