Skip to content / Đến nội dung
ThichHocToan.com

1980 AMC 12 Question 17

AMC12 · 1980 AMC 12

Question 17

Given that $i^2=-1,$ for how many integers $n$ is $(n+i)^4$ an integer?
  1. none
  2. $1$
  3. $2$
  4. $3$
  5. $4$