Write down all the subsets of the following sets
$\{ 1,2,3\} $
The subsets of $\{ 1,2,3\} $ are $\varnothing,\{1\},\{2\},\{3\},\{1,2\},\{2,3\},\{1,3\}$ and $\{1,2,3\}$
What universal set $(s)$ would you propose for each of the following :
The set of right triangles
In the following state whether $A=B$ or not :
$A=\{a, b, c, d\} ; B=\{d, c, b, a\}$
Examine whether the following statements are true or false :
$\{ a,e\} \subset \{ x:x$ is a vowelin the English alphabet $\} $
$\{ a,b\} $
Write the set $A = \{ 1,4,9,16,25, \ldots .\} $ in set-builder form.
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