Các câu hỏi tương tự
Cho N= 1/2^2+1/3^2+1/4^2+........+1/2009^2+1/2010^2
CMR N < 1
N=1/2^2 + 1/3^2+1/4^2+.....+1/2009^2 + 1/2010^2
cmr: N <1
Cho N = \(\dfrac{1}{2^2}+\dfrac{1}{3^2}+\dfrac{1}{4^2}+...+\dfrac{1}{2009^2}+\dfrac{1}{2010^2}\).Chứng minh N <1
Cho P = 1/2 + 1/3 +1/4 +...+1/2011 + 1/2012
Q = 1/2011 + 2/2010 + 3/2009 +...+ 2009/3 + 2010/2 + 2011/1
Cho A = 1/2001+2/2009+3/2008+........2009/+ 2010/1, B = 1+1/2+1/3+1/4+1/5+1/6+.......1/2010+1/2011. Tính A/B
cho A=\(\frac{1}{2010}+\frac{2}{2009}+\frac{3}{2008}+...+\frac{2009}{2}+\frac{2010}{1}\)
B=\(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+...+\frac{1}{2010}+\frac{1}{2011}\)
tính\(\frac{a}{b}\)
b.giả sử 2^2010 có m chữ số và 5^2010 có n chữ số.tính m+n
cho N = 1/22+1/32+1/42+...+1/20092+1/20102
CM: N < 1
Tinh\(\frac{\frac{2010}{1}+\frac{2009}{2}+\frac{2008}{3}+...+\frac{2}{2009}+\frac{1}{2010}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+...+\frac{1}{2010}+\frac{1}{2011}}\)
n=1/22+1/32+1/42+...+1/20092+1/20102
chứng tỏ n<1