1/1.2+1/2.3+1/3.4+...+1/99.100
Tính :
1/1.2 + 1/2.3 + 1/3.4 + . . . + 1/99.100
1/(1.2)+1/(2.3)+1/(3.4)+...+1/(99.100)=?
1/1.2+1/2.3+1/3.4+ ... +1/98.99+1/99.100
Giúp với : 1/1.2+1/2.3+1/3.4+...+1/99.100 = ?
3/4+1/1.2+1/2.3+1/3.4+........+1/99.100
3/4+1/1.2+1/2.3+1/3.4+........+1/99.100
làm phép tính
1/1.2+1/2.3+1/3.4+ ... +1/98.99+1/99.100
\(\dfrac{1}{1.2}\)+\(\dfrac{1}{2.3}\)+\(\dfrac{1}{3.4}\)+.....+\(\dfrac{1}{99.100}\)
\(\dfrac{1}{1.2}+\dfrac{1}{2.3}+\dfrac{1}{3.4}+...+\dfrac{1}{99.100}\)