Các câu hỏi tương tự
Tính :
a) A=1/2+1/22+1/23+......................................................+1/29
b) B=1/4+1/12+1/36+1/108+1/324+1/972
Tính
\(A=\frac{1}{2}+\frac{1}{2^2}+...+\frac{1}{2^9}\)
\(B=\frac{1}{4}+\frac{1}{12}+\frac{1}{36}+\frac{1}{108}+\frac{1}{324}+\frac{1}{972}\)
tính nhanh 1/4+1/12+1/36+1/108+1/324+1/972
Tính tổng: 1 + 1/4+ 1/12 + 1/36 + 1/108 +1/324 + 1/972
tính
A=\(\frac{1}{2}+\frac{1}{2^2}+...+\frac{1}{2^9}\)
B=\(\frac{1}{4}+\frac{1}{12}+\frac{1}{36}+\frac{1}{108}+\frac{1}{324}+\frac{1}{972}\)
Tính tổng: 1/4 +1/12 + 1/36 + 1/108 + 1/324 + 1/972
Tính \(\frac{1}{4}+\frac{1}{12}+\frac{1}{36}+\frac{1}{108}+\frac{1}{324}+\frac{1}{972}\)
Tính : A= 1/4 + 1/12 + 1/36+ 1/108+ 1/ 324+ 1/ 972
Các pạn giúp tớ nha . Help me please !
A=\(\frac{1}{4}+\frac{1}{12}+\frac{1}{36}+\frac{1}{108}+\frac{1}{324}+\frac{1}{972}\)