Question

Tính tổng  S = C 2017 0 + 1 2 C 2017 1 + 1 3 C 2017 2 + . . . + 1 2018 C 2017 2017

A.  2 2017 - 1 2017

B.  2 2018 - 1 2018

C.  2 2018 - 1 2017

D.  2 2017 - 1 2018

Answer 1