TÍNH TỔNG 1 ( 20181 )2 2 ( 20182 )2 ... 2017( 20182017)2 2018( 20182...
Câu 45: Tính tổng
1
(
2018
1
)
2
2
(
2018
2
)
2
...
2017
(
2018
2017
)
2
2018
(
2018
2018
)
2
S
=
C
+
C
+ +
C
+
C
2018
2017
2
1
A.
1
4036
2018
S
=
2019
C
D.
2018
4036
2018
S
=
2019
C
S
=
2018
C
B.
1
4036
2018
S
=
2018
C
C.
2018
2018
1009