Các câu hỏi tương tự
tìm số tự nhiên x biết
a.\(\frac{1}{100}< \frac{x}{110}< \frac{1}{50}\)
b.\(\frac{123}{1000}< \frac{x}{2008}< \frac{124}{1000}\)
1.
a) \(A=\frac{\left(\frac{2018}{1}-1\right)\left(\frac{2018}{2}-1\right)...\left(\frac{2018}{1000}-1\right)}{\left(\frac{1000}{1}+1\right)\left(\frac{1000}{2}+1\right)...\left(\frac{1000}{1007}+1\right)}\)
b) Tìm x biết 378% của x kém A 55 đơn vị.
2. Tìm a, b, c sao cho : \(\frac{\overline{ab}.\overline{bc}.\overline{ca}}{\overline{ab}+\overline{bc}+\overline{ca}}=\frac{3321}{11}\)
Tìm x biết
a \(\frac{1}{1.2}+\frac{1}{2.3}+\frac{1}{3.4}...........+\frac{1}{2.\left(x-1\right)}=\frac{999}{1000}\)
b \(\frac{1}{5.8}+\frac{1}{8.11}+\frac{1}{11.14}+.........+\frac{1}{2.\left(x+5\right)}=\frac{101}{1540}\)
Tìm x :
a ) ( 9 - 8x ) 2 = 100
b ) ( 20 - x ) 2 = 60
c ) \(\frac{1}{2}x+\frac{8}{4}=\frac{100}{25}\)
d ) ( 90 - x ) 10 = 1000
tìm x biết
\(x+\frac{1}{2}+\frac{1}{6}+\frac{1}{12}+...+\frac{1}{90}=\frac{4}{3}\times\frac{9}{8}\times\frac{16}{15}\times....\times\frac{100}{99}+\frac{9}{110}\)
Tìm x, biết:
\(\left(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2008}\right).x=\frac{2009}{1}+\frac{2010}{2}+\frac{2011}{3}+...+\frac{4016}{2008}-2008\)
Tìm xa) left(x-1right)+left(x-2right)+left(x-3right)+.....+left(x-100right)101b) x+2x+3x+....+100x1000c) x+1+2left(x+2right)+3left(x+3right)+...+100left(x+100right)101^2d) frac{1+x}{1}+frac{1+x}{2}+frac{1+x}{3}+...+frac{1+x}{30}0e) left(1+frac{x}{1}right)left(2-frac{x}{2}right)left(3-frac{x}{3}right)0BẠN NÀO BIẾT PHẦN NÀO THÌ GIÚP MIK NHÉ!Thank!!
Đọc tiếp
Tìm x
a) \(\left(x-1\right)+\left(x-2\right)+\left(x-3\right)+.....+\left(x-100\right)=101\)
b) \(x+2x+3x+....+100x=1000\)
c) \(x+1+2\left(x+2\right)+3\left(x+3\right)+...+100\left(x+100\right)=101^2\)
d) \(\frac{1+x}{1}+\frac{1+x}{2}+\frac{1+x}{3}+...+\frac{1+x}{30}=0\)
e) \(\left(1+\frac{x}{1}\right)\left(2-\frac{x}{2}\right)\left(3-\frac{x}{3}\right)=0\)
BẠN NÀO BIẾT PHẦN NÀO THÌ GIÚP MIK NHÉ!
Thank!!
Tìm x là số tự nhiên sao cho: \(\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+...+\frac{1}{x\left(x+1\right)}=\frac{1000}{2002}\)
tìm x biết
\(\frac{x-2}{1002}+\frac{x-4}{1001}+\frac{x-6}{1000}=\frac{x-8}{999}+\frac{x-10}{998}+\frac{x-12}{997}\)