Tổng C0 2019 + C1 2019 + C2 2019 + C3 2019 + ...+ C2016 2019 + C2017 2019 có giá trị bằng:

Tổng C20190+C20191+C20192+C20193+...+C20192016+C20192017 có giá trị bằng:
A. 22017.
B. 220172018
C. 220191.
D. 220192020.

Trả lời

Chọn D

Ta có

C20190+C20191+C20192+C20193+...+C20192016+C20192017+C20192018+C20192019=22019

C20190+C20191+C20192+C20193+...+C20192016+C20192017+C20192018+C20192019=22019C20192018C20192019

C20190+C20191+C20192+C20193+...+C20192016+C20192017+C20192018+C20192019=2201920191

C20190+C20191+C20192+C20193+...+C20192016+C20192017+C20192018+C20192019=220192020.

Câu hỏi cùng chủ đề

Xem tất cả