A=\(\frac{1}{1\cdot2}+\frac{1}{2\cdot3}+...+\frac{1}{50\cdot51}\)
A=\(\left(\frac{1}{1}-\frac{1}{2}\right)+\left(\frac{1}{2}-\frac{1}{3}\right)+...+\left(\frac{1}{50}-\frac{1}{51}\right)\)
A=\(1-\frac{1}{51}\)
A=\(\frac{50}{51}\)
tính A biết
A =1/2+1/6+1/12+1/20+...+1/2450+1/2550
Tính A = 1/2 + 1/6+ 1/12 + 1/20 + ...+ 1/2450 + 1/ 2550
Tính A=1/2+1/6+1/12+1/20+...+1/2450+1/2550
tính A= 1/2+1/6+1/12+1/20+....+1/2450+1/2550
Tính A= 1/2+ 1/6+ 1/12+1/20+....+1/2450+1/2550.
Tìm A biết A băng 1/2 + 1/6 + 1/12 + 1/20 + ..... + 1/2450 + 1/ 2550
Tính A = 1/2 + 1/6 + 1/12 + 1/20 + ... 1/2450+ 1/2550
Nhanh giùm mk nhé
A = 1/2 + 1/6 + 1/12 + 1/20 + ... + 1/2450 + 1/2550
Tính A = 1/2 + 1/6 + 1/12 + 1/20 + ... + 1/2450 + 1/2550
Viết cả lời giải ra
Nhanh giùm mk nha
