Write the following as intervals :
$\{ x:x \in R,0\, \le \,x\, < \,7\} $
Which of the following are examples of the null set
$\{ y:y$ is a point common to any two parallellines $\} $
Write the following as intervals :
$\{ x:x \in R, - 4\, < \,x\, \le \,6\} $
What universal set $(s)$ would you propose for each of the following :
The set of right triangles
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $x$ is odd $\} $