TỔNG S=C20190 +C12019+C20192 +C20193 + +... C20192018+C20192019 BẰNG...

Câu 17:

Tổng

S

=

C

2019

0

+

C

1

2019

+

C

2019

2

+

C

2019

3

+ +

...

C

2019

2018

+

C

2019

2019

bằng

A.

0

.

B.

1

.

C.

2

2019

.

D.

2

2019

.