A=24/1.3.5+24/3.5.7+24/5.7.9+...+24/25.27.29
24/1.3.5+24/3.5.7+24/5.7.9+...+24/25.27.29
24/1.3.5+24/3.5.7+24/5.7.9+...+24/25.27.29
Tính
\(\frac{20}{2.3.5}+\frac{20}{3.5.7}+\frac{20}{5.7.9}+...+\frac{20}{25.27.29}\)
3 k 1 lượt lm
Tính
1/1.3.5 + 1/3.5.7 + 1/5.7.9 + ... + 1/99.101.103
CÁC BẠN GIÚP MIK VỚI
Tính.
a)A=1/1.3.5+1/3.5.7+1/5.7.9+...+1/97.99.101
b)B=2^2019-2^2018-2^2017-...-2+1
c)C=1/1.2+1/3.4+...+1/49.50-1/50-1/49-...-1_2
d)D=1/2!+5/3!+11/4!+..+99.100-1/100!
Tính :
A = \(\frac{17}{1.3.5}\) + \(\frac{17}{3.5.7}\) + \(\frac{17}{5.7.9}\) + ... + \(\frac{17}{47.49.51}\)
Ủng hộ 2 tick cho !!!
Cho \(A=\sqrt{20+\sqrt{20+\sqrt{20+...+\sqrt{20}}}}\); \(B=\sqrt[3]{24+\sqrt[3]{24+\sqrt[3]{24+...\sqrt[3]{24}}}}\)
Mỗi số đều có 2005 dấu căn. Tìm [A+B]?
Biết UCLN(24,a)=8;BCNN(24,a)=120 Khi đó a=