Các câu hỏi tương tự
A=-1-2+3+4-5-6+7+8-9-10+11+12-.. ..-3013-2014+2015+2016
A=1-2+3+4-5-6+7+8-9-10+11+12-...-2014+2015+2016
A= -1-2+3+4-5-6+7+8-9-10+11+12-...-2013-2014+2015+2016
Tính A=-1-2+3+4-5-6+7+8-9-10+11+12-.......-2013-2014+2015+2016
Tính A = ( -1 ) -2+3+4 -5-6+7=8-9-10+11+12 - ....-2013 - 2014+2015+2016
Tính A = (-1) -2 +3 +4 - 5 -6 +7=8 -9-10 +11+12 -...-2013 - 2014+2015+2016
1) A = - 1 - 2 + 3 + 4 - 5 - 6 + 7 + 8 - 9 - 10 + 11 + 12 - ... - 2013 - 2014 + 2015 + 2016
A=1-2+3+4-5-6+7+8-9-...+2007+2008-2009-2010
B=-1-2+3+4-5-6+7+8-9-10+11+12-...-2013-2014+2015+2016
C=(2+4+6+8+...+2014)-(3+5+7+9...+2011)
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