Skip to content / Đến nội dung
ThichHocToan.com

1975 AMC 12 Question 6

AMC12 · 1975 AMC 12

Question 6

The sum of the first eighty positive odd integers subtracted from the sum of the first eighty positive even integers is
  1. $0$
  2. $20$
  3. $40$
  4. $60$
  5. $80$