1/1x2 +1/2x3 +1/3x4 + 1/4x5 + ... + 1/2016 x 2017
1/1x2+1/2x3+1/3x4 +1/4x5+1/5x6+1/5x7
giải ra cho mik nha Cảm ơn
1/1x2 + 1/2x3 +1/3x4 +1/4x5 +1/5x6
Tính:1/(1x2)+1/(2x3)+1/(3x4)+1/(4x5)+...+1/(98x99)+1/(99x100)
Tính nhanh :
A = 1/1x2 + 1/2x3 + 1/3x4 + 1/4x5 + ........1/98x99 + 1/99x100 .
Tính Nhanh:1/1x2+1/2x3+1/3x4+1/4x5+1/5x6
Ai trả lời đúng tớ k cho
a,1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64
b, 1/1x2 + 1/2x3 + 1/3x4 + 1/4x5 + 1/5x6 + 1/5x6
1/1x2+1/2x3+1/3x4+1/24x25
1/1x2+ 1/2x3+1/3x4+1/24x25
1/2x3+ 1/3x4 + 1/4x5
các ac giúp e với ạ
e cảm ơn ac nhiều ạ