1+2-3-4+5+6-7-8+9+1-.........+2010-2011-2012+2013+2014-2015-2016+2017
tinh tong :S=1-2+3-4+5-6+...+2015-2016
Cho tong T=2/2^1+3/2^2+4/2^3 +...+2016/2^2015+2017/2^2016.So sanh T voi 3
Tinh tong S=1/1×2+1/2×3+1/3×4+...+1/2014×2015+1/2015×2016
Tinh tong S=1/1×2+1/2×3+1/3×4+...+1/2014×2015+1/2015×2016
Tinh tong
a) 1-2+3-4+.....+2016-2017
b) 0-2+4-6+...+2016-2018
Ai lam dc, dung minh cho 2 tick
1 Tính nhanh
2015 - ( 403.5 - 2016) - 2016 + 2^2017 : 2^2015 - 2^2015:4^1007-1-3+4-5-6+11
Cho tong T=2/2^1+3/2^2+4/2^3 +...+2016/2^2015+2017/2^2016.So sanh T voi 3
ai trả lời được mình tik 3 nick luôn
tinh tong
(-40)+(-39)+....+33+34+35
b) 1+2-3-4+5+6-7-8+9+...+2013+2014-2015-2016