3. (3%) Let A, B, C be finite sets. Which of the following statements is true? (A) If A∪C = B ∪ C, then A = B (B) If A ∩ C = B∩ C, then A = B (C) If A -C = B -C, then A = B(D)
3. (3%) Let A, B, C be finite sets. Whic..-阿摩線上測驗