O resto na divisão por 1000 de 1 ⋅ 2 + 2 ⋅ 3 + 3 ⋅ 4 + ⋯ + 2019 ⋅ 2020 + 2020 ⋅ 2021 é:
Questão
Sprint ITA/IME
2022
resto-divisa-por-1000290d4f12f2
A
50
B
420
C
80
D
780
E
180