Các câu hỏi tương tự
4 x 2 : 2 x 3 : 3 x 4 : 4 x........x 100 : 100 + 6 x 1 : 1 x 2 : 2 x 3 : 3 x 4 : 4 x........x 1000 : 1000 x4
giúp nhanh
2-1+4-3+6-5+.............+1000-999
1/2*4+1/4*6+.............+1/98*1000
5/2*4+5/4*6+...........+5/98*100
1 + 2 + 3 + 4 + 5 + ................................................................... + 1000 = X
1 + 3 + 5 + 7 + 9 + ................................................................... + 999 = Y
1 + 4 + 7 + 10 + 13 + ............................................................... + 1000 = Z
X + Y + Z = ?
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
Tìm tổng sau:1 + 2 + 3 +4 + ..... + 999 + 1000 - 1 - 2 - 3 - 4 - ... 99 - 100
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