1.
Let A={x∈R:∣x+1∣<2}A = \{x \in \mathbb{R} : |x + 1| < 2\} and B={x∈R:∣x−1∣≥2}B = \{x \in \mathbb{R} : |x - 1| \geq 2\}. Then which one of the following statements is NOT true?