Các câu hỏi tương tự
Cho K = 1+[1+2]+[1+2+3]+.....+[1+2+3+....+2012]/2012.1+2011.2+2010.3+....+2.2011+1.2012
Tính K+2011
Tính K=
1+(1+2)+(1+2+3)+(1+2+3+4)+....+(1+2+..+2012)/2012.1+2011.2+...1.2012
Cho K:\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+........+\left(1+2+3+........+2012\right)}{2012\text{x}1+2011\text{x}2+2010\text{x}3+.............+1\text{x}2012}\)
Tính K cộng với 2011
cho K=\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2012\right)}{2012\times1+2011\times2+2010\times3+...+2\times2011+1\times2012}\)
Tính k +2011
giúp nha -.- mk cho 5 tk
k=\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2013\right)}{2013\cdot1+2012\cdot2+2011\cdot3+...+2\cdot2012+1\cdot2013}\)
Tính K + 2013, biết:
K=\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2013\right)}{2013\times1+2012\times2+2011\times3+...+2\times2012+1\times2013}\)
Tính K , biết :
\(K=\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2012\right)}{2012\times1+2011\times2+2010\times3+...+2\times2011+1\times2012}\)
( Trích đề Violympic )
Cho mình cách làm .
Cho a =\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+...+\left(1+2+3+...+2012\right)}{2012x1+2011x2+201x3+...+2x2011+1x2012}\)
\(\frac{1+\left[1+2\right]+\left[1+2+3+...+2012\right]}{2012^1+2011^2+2010^3+...+2^{2011}+1^{2012}}\)