ta thấy 1/1-1/2=1/1x2
vậy tích đó \(1-\frac{1}{2}+\frac{1}{2}.............-\frac{1}{1000}=1-\frac{1}{1000}=\frac{999}{1000}\)
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
1/1*2+1/2*3+1/3*4+.......+1/999*1000+1
1-1/2+1/3-1/4+......+1/999-1/1000
500-500/501-501/502-502/503-....-999/1000
1/1*2 + 1/2*3 + 1/3*4 + ... + 1/999*1000
1/(1×2) + 1/ ( 2×3) +1/ (3×4) +................+1/(999×1000) +1
1/1*2+1/2*3+1/3*4+...+1/999*1000+1=?
1/1*2 +1/2*3 + 1/3*4 +..........+1/999*1000 +1
1/1*2+1/2*3+1/3*4+..........+1/999*1000+1
1/1*2+1/2*3+1/3*4+...+1/999*1000+1
1/1*2+1/2*3+1/3*4+...+1/999*1000+1