Which of the following is a true statement
State whether each of the following set is finite or infinite :
The set of letters in the English alphabet
Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:
$\{ x:x$ is an equilateral triangle in a plane $\} \ldots \{ x:x$ is a triangle in the same plane $\} $
List all the elements of the following sers :
$B = \{ x:x$ is an integer $; - \frac{1}{2} < n < \frac{9}{2}\} $
Write the following intervals in set-builder form :
$\left[ { - 23,5} \right)$