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\(\left(1-\frac{1}{1014}\right).\left(1-\frac{2}{1014}\right).\left(1-\frac{3}{1014}\right).\left(1-\frac{4}{1014}\right)...\left(1-\frac{1015}{1014}\right)\)
So sánh 2 phân số: \(\frac{1014}{1015};\frac{2014}{2015}\)
So sánh mà không cần tính: C = 1009 . 1015 ; B = 1011 . 1013 - 512
tính nhanh
A=1+3-5+7-..........-2013+2015
B=1-2+3-4+...................2015-2016
C=1-2-3+4+5-6-6+8+...........+2013-2014-2015+2016
D=1-4+7-10+.....-2014+2017
E=1+2-3-3+5+6 -.......+2013+2014-2015-2016
F=1-2+3-4+..........+2015+2016
G=1+3-5-7+9+11.............-2013-2015
H=1-2-34+5-6-7+8+.................+1013-1014-1015+1016
So sánh P và Q, biết: \(P=\frac{1010}{1011}+\frac{1011}{1012}+\frac{1012}{1013}\) và \(Q=\frac{1010+1011+1012}{1011+1012+1013}\)
Cho \(A=\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+...+\frac{1}{2019+2020}\) và \(B=\frac{1}{1011}+\frac{1}{1012}+\frac{1}{1013}+...+\frac{1}{2020}\)
So sánh A và B
Mong các bạn giúm mìnk nha \(\frac{1011+1014+\frac{2015}{777}+\frac{2015}{888}-\frac{1011}{999}-\frac{1014}{999}}{201+202+\frac{403}{777}-\frac{403}{888}-\frac{201}{999}-\frac{202}{999}}\)
Thực hiện phép tính : \(\frac{-6}{19}:\frac{2017}{1015}+\frac{-6}{19}:\frac{2017}{1002}+\frac{|-5|^2}{19}\)
Cho A= \(\frac{2016}{2017}+\frac{2017}{2018}+\frac{2018}{2016}\)
So sanh A voi 3