The sum of all the integers from 1 through 2019 is $$\(\frac{7}{9}\)$$ less than the sum of all the integers from 2 through 2020.
A.
1
B.
2
C.
2019
D.
2020
Exam No：2021 First Round Grade 7 Year：2021 Question No：7
Answer:
C
Knowledge points:
G7 - Algebra - Arithmetic Sequences (Sum & Terms)
Solution:
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