Các câu hỏi tương tự
a/ 3/5x7 +3/7x9 +....+3/59x61
b/ 1+1/2+1/4+1/8+1/16+....+1/512+1/1024
(2 + 4 + 6 + ... + 98) x (\(\dfrac{3}{4}\) x 8 - 15 x 0,4) x (\(\dfrac{1}{2}\) + \(\dfrac{1}{4}\) + \(\dfrac{1}{8}\) + ... + \(\dfrac{1}{512}\) )
Giúp mình vớiii
Tính nhanh:
1/2+1/4+1/8+1/16+...+1/512+1/1024
Ai nhanh mình tích 3 cái
Tìm x
a) ( x-1/2)+(x-1/4)+(x-1/8)+...+(x-1/512)=1
b) x+1/2+1/3+1/4+...+1/100=3/2+4/3+5/4+...+101/100
Giải rõ ràng giùm mk với nha
A= 1/2 + 1/4 + 1/8 +...+1/256 +1/512
Tính
a) (x-1/2)+(x-1/4)+(x-1/8)+...+(x-1/512)
Tìm x
a) (x-1/1×2)+(x-1/2×3)+...+(x-1/100×101)
b) (x-1)+(x-2)+(x-3)+...+(x-101)=5050
c) x+1/2+1/3+1/4+...+1/100=3/2+4/3+5/4++...+101/100
1/2+1/4+1/8+...+1/512+1/1024
1\2 + 1\4 + 1\6 + ... + 1\156 + 1\512 = ?
1/2+1/4+1/8+...+1/512+1/1024