Câu A mình làm được nhưng dài quá
B=\(\left(1+\frac{1}{2}\right).\left(1+\frac{1}{3}\right).............\left(1+\frac{1}{2015}\right)\)
=\(\frac{3}{2}.\frac{4}{3}..............\frac{2016}{2015}\)
=\(\frac{3.4...............2016}{2.3................2015}\)
=\(\frac{2016}{2}=1008\)