In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $A \not\subset B$ and $B \not\subset C,$ then $A \not\subset C$
What universal set $(s)$ would you propose for each of the following :
The set of isosceles triangles
Write the following as intervals :
$\{ x:x \in R, - 4\, < \,x\, \le \,6\} $
Which of the following are sets ? Justify your answer.
The collection of questions in this chapter.
In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $A \subset B$ and $B \in C,$ then $A \in C$