Skip to content / Đến nội dung
ThichHocToan.com

1972 AMC 12 Question 10

AMC12 · 1972 AMC 12

Question 10

For $x$ real, the inequality $1\le\lvert x-2\rvert\le7$ is equivalent to:
  1. $x\le1$ or $x\ge3$
  2. $1\le x\le3$
  3. $-5\le x\le9$
  4. $-5\le x\le1$ or $3\le x\le9$
  5. $-6\le x\le1$ or $3\le x\le10$