Các câu hỏi tương tự
B=\(\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+...+\frac{1}{120}\)
tính:
\(\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+.........+\frac{1}{120}\)
Tính nhanh: N = \(\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+...+\frac{1}{120}\)
\(\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+...+\frac{1}{120}\)
\(\frac{1}{10}+\frac{1}{15}+\frac{1}{21}+...+\frac{1}{120}\)
CỨU
\(\frac{x}{2008}-\frac{1}{10}-\frac{1}{15}-\frac{1}{21}...\frac{1}{120}=\frac{5}{8}\)Tìm x
tinhn
\(\frac{1}{10}-\frac{1}{15}-\frac{1}{21}-...-\frac{1}{120}\)
TINH\(C=\frac{x}{2008}-\frac{1}{10}-\frac{1}{15}-\frac{1}{21}-...-\frac{1}{120}=\frac{5}{8}\)
tìm x :
\(\frac{x}{2008}-\frac{1}{10}-\frac{1}{15}-\frac{1}{21}-....-\frac{1}{120}=\frac{5}{8}\)