Các câu hỏi tương tự
tìm x biết:
\(\left(x+\frac{1}{2}\right)+\left(x+\frac{1}{4}\right)+\left(x+\frac{1}{8}\right)+\left(x+\frac{1}{16}\right)=\frac{23}{16}\)
a)Tính bằng cách thuận tiện nhất :
\(\frac{1}{2}x\frac{1}{3}+\frac{1}{3}x\frac{1}{4}+\frac{1}{4}x\frac{1}{5}+\frac{1}{5}x\frac{1}{6}\)
b) Tính :
\(\left(1-\frac{1}{2}\right)x\left(1-\frac{1}{3}\right)x\left(1-\frac{1}{4}\right)\)
Tìm x:
\(\left(1-\frac{1}{2}\right)\)\(\times\left(1-\frac{1}{3}\right)\times\left(1-\frac{1}{4}\right)\times...\times\left(1-\frac{1}{100}\right)\times200\times x=4036\)
Tính nhanh :
\(\left(1-\frac{1}{2}\right)x\left(1-\frac{1}{3}\right)x\left(1-\frac{1}{4}\right)x....x\left(1-\frac{1}{50}\right)\)
A=\(\frac{1}{2015}+\frac{2}{2015}+\frac{3}{2015}+....+\frac{2014}{2015}\).Tim A:
Tìm x:\(\left(x+\frac{1}{2}\right)+\left(x+\frac{1}{4}\right)+\left(x+\frac{1}{8}\right)+\left(x+\frac{1}{16}\right)=\frac{23}{16}\)
Trả lời:x là......
Tính tổng :
\(\frac{1}{2015}+\frac{2}{2015}+\frac{3}{2015}+...+\frac{2014}{2015}\)
Tính bằng cáh thuân tiện nhất
1- (\(1-\left(\frac{1}{2}x\frac{3}{5}+\frac{1}{5}x\frac{1}{2}+\frac{2}{10}x\frac{1}{2}+\frac{1}{2}\right)\)
Tính nhanh bài toán sau
\(\left(\frac{19}{20}x\frac{3}{4}+\frac{1}{20}x\frac{3}{4}\right)x\left(\frac{1}{2}x\frac{3}{4}-\frac{2}{4}x\frac{3}{4}\right)\)