Alex says' If A is a subset of B and C is a subset of B, then A is a subset of C'
Explain why he is not correct.
2. Represent each of the following sets using description.
2.1 (football, tennis, Rugby, basketball)
2.2 (John, David, Billy, Peter, William)
F5 Maths (probability/set)
2012-08-27 8:06 pm
回答 (1)
2012-08-27 9:25 pm
✔ 最佳答案
Let me give you a counter example to disprove his statement.Let A={1}, B={1,2}, C={2}
Then A and C are subsets of B but A is not a subset of C. Hence, the statement is false.
參考: me
收錄日期: 2021-04-13 18:56:16
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120827000051KK00234