Các câu hỏi tương tự
Tìm x biết: \(\left(\frac{1}{1.101}+\frac{1}{2.102}+...+\frac{1}{10.110}\right).x=\frac{1}{1.11}+\frac{1}{2.12}+...+\frac{1}{100.110}\)
Tìm số nguyên \(x\)nhỏ nhất thỏa mãn:
\(\left(\frac{2011}{2012}+\frac{2012}{2013}+\frac{2013}{2011}\right).\left(x-2013\right)>3x-6039\)
$A=\frac{2011}{1.2}+\frac{2011}{3.4}+\frac{2011}{5.6}+...+\frac{2011}{1999.2000}$
$B=\frac{2012}{1001}+\frac{2012}{1002}+\frac{2012}{1003}+...\frac{2012}{2000}$
1. Tinh a left(6^9.2^{10}+12^{10}right)+left(2^{19}.27^3+15.4^9.9^4right)2. So sanh A va B.a) Afrac{-2012}{4025};Bfrac{-1999}{3997}b) A3^{21};B2^{31}c) Afrac{2011}{1.2}+frac{2011}{3.4}+frac{2011}{5.6}+....+frac{2011}{1999.2000};Bfrac{2012}{1001}+frac{2012}{1002}+frac{2012}{1003}+....+frac{2012}{2000}
Đọc tiếp
1. Tinh a \(\left(6^9.2^{10}+12^{10}\right)+\left(2^{19}.27^3+15.4^9.9^4\right)\)
2. So sanh A va B.
a) \(A=\frac{-2012}{4025};B=\frac{-1999}{3997}\)
b) \(A=3^{21};B=2^{31}\)
c) \(A=\frac{2011}{1.2}+\frac{2011}{3.4}+\frac{2011}{5.6}+....+\frac{2011}{1999.2000};\)\(B=\frac{2012}{1001}+\frac{2012}{1002}+\frac{2012}{1003}+....+\frac{2012}{2000}\)
Tìm số hữu tỉ x biết:
a) \(\frac{x+4}{2009}+\frac{x+3}{2010}=\frac{x+2}{2011}+\frac{x+1}{2012}\)
b) \(\frac{x-2011}{2010}+\frac{x-2011}{2011}+\frac{x-2011}{2012}=\frac{x-2011}{2013}+\frac{x-2011}{2014}\)
Bài 1: Tính nhanh
\(\left(1-\frac{1}{7}\right)\times\left(1-\frac{1}{8}\right)\times\left(1-\frac{1}{9}\right)\times...\times\left(1-\frac{1}{2011}\right)\)
Bài 2:
So sánh\(\frac{2011}{2012}+\frac{2012}{2013}+\frac{2013}{2011}\)với 3
So sánh
M= \(\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}\)
N= \(\frac{2010+2011+2012}{2011+2012+2013}\)
Bài 1: Tính nhanh
\(\left(1-\frac{1}{7}\right)\times\left(1-\frac{1}{8}\right)\times\left(1-\frac{1}{9}\right)\times...\times\left(1-\frac{1}{2011}\right)\)
Bài 2:
So sánh \(\frac{2011}{2012}+\frac{2012}{20013}+\frac{2013}{2011}\)với 3
B1 : So sanh P ,Q biết
P = \(\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}\) Và Q = \(\frac{2010+2011+2012}{2011+2012+2013}\)
B2 : Tìm a, b Biết BCNN(a,b) = 420 Và ƯCLN(a,b) = 21. a+ 21 = b