Các câu hỏi tương tự
Tính K +2011 Biết
1+(1+2)+(1+2+3)+....+(1+2+3+4+...+2012)
2012*1+2011*2+....+1*2012
Biết p/s đó bằng K
A=[2012+2011/2+2010/3+2009/4+...1/2012]:[1/2+1/3+1/4+...+1/2012+1/2013]
HOI A CHIA 3 DU BAO NHIEU ?
1-1/2+1/3-1/4+1/5-1/6+...+1/2011-1/2012 / 1006-1006/1007-1007/1008-1008/1009-...-2010/2011-2011/2012
Cho K = 1 + ( 1 + 2 ) + ( 1 + 2 + 3 ) + .... + ( 1 + 2 + 3 + .... + 2012 ) / 2012 x 1 + 2011 x 2 + 2010 x 3 + .. + 2 x 2011 + 1 x 2012 .
Tính K .
K+2011 ra bao nhiêu, biết
K=1+(1+2)+(1+2+3)+......+(1+2+3+....+2012)/2012*1+2011*2+....+1*2012
1×2+2×3+3×4+....+2011×2012+2012×2013
1×2×3+2×3×3+3×3×4+.....+2011×2012×3+2012×2013×3
\(choA=\frac{2012+\frac{2011}{2}+\frac{2010}{3}+\frac{2009}{4}+...+\frac{1}{2012}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2012}+\frac{1}{2013}}.hỏiAchia3dưbaonhiêu\)
\(\frac{1+\left[1+2\right]+\left[1+2+3+...+2012\right]}{2012^1+2011^2+2010^3+...+2^{2011}+1^{2012}}\)