Question

Write all subsets of (p,q,r)

Answer 1

(p),(q),(r),(pq),(pr),(qr),(pqr),( )

Answer 2

$Let \: Set \: A = \{ p, q , r \}$

$Cordinal \: number \: of \: set A \\= n(A) \\= Number \: of \: elements \: in \:the \: set \\= 3$

$Number \: of \:subsets \:of \:A = 2^{n(A)} \\= 2^{3} \\= 8$

$Now, \red{ Subsets \:of \: A} \\\green {= \{p\} , \{q\} ,\{r\} ,\{p,q\} ,\{q,r\} ,\{r,p\} ,\{p,q,r\} ,\{ \}}$

•••♪