Các câu hỏi tương tự
Cho \(A=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
CMR A>\(\frac{7}{12}\)
A>\(\frac{5}{8}\)
Cho \(A=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
CMR \(A>\frac{7}{12}\)
\(A>\frac{5}{8}\)
Cho \(A=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
cmr \(A< \frac{7}{12}\)
cho A=\(\frac{1}{101}\)+\(\frac{1}{102}\)+\(\frac{1}{103}\)+...+\(\frac{1}{200}\)
chứng minh rằng : a, A>\(\frac{7}{12}\)
b, A>\(\frac{5}{8}\)
Chứng minh:
A = \(\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+.....+\frac{1}{199}+\frac{1}{200}>\frac{7}{12}\)
\(Cho A=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+\frac{1}{104}+.....+\frac{1}{200}\). Chứng tỏ: \(A>\frac{7}{12}\)
Cho \(A=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+\frac{1}{104}+......+\frac{1}{199}+\frac{1}{200}\)
Chứng tỏ \(A
Cho: A = \(\frac{1}{101}+\frac{1}{102}+....+\frac{1}{200}\). CMR : A > \(\frac{7}{12}\)
1)
\(Cho:\frac{1}{20}+\frac{1}{21}+\frac{1}{22}+...+\frac{1}{200}\)
Chứng minh: \(A>\frac{9}{10}\)
2)
Cho \(B=\frac{1}{101}+\frac{1}{102}+\frac{1}{103}+...+\frac{1}{200}\)
Chứng minh \(B>\frac{7}{12}\)