Question

if A={1,2,3} find p(A) and all proper subset of A​

Answer 1

Step-by-step explanation:

total number of subset = 2^3 - 2= 6

P (A)= ( 1 ,2 ,3, 1,3 , 1,2 , 2,3 , 1,2,3)

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Answer 2

$\red{given : \: \: \: \: \: \: } \\ \\ a = (1.2.3) \\ \\ </p><p>\blue{to \ \: find : \: } \: \: \: \\ \\ 1. \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: p(a) \\2. \: \: \: \: \: \: \: \: \: subset \: \: \: of \: \: \: a</p><p> \\ \\ \pink{solution : } \\ \\ \bold{\underline {subset \: \: of \: \: \: a}} \\ \\ a = (1) \\ \\ a = (1.2) \\ \\ a = (1.3) \\ \\ a = (2.3) \\ \\ a = (2) \\ \\ a = (3) \\ \\ a = (1.2.3) \\ \\ </p><p>\green{p(a) = } </p><p>\pink{ \frac{n(a)}{n(s)} } \\ = \frac{1}{3} \\ \\ \red{or}</p><p> = \frac{2}{3} \\ \\ \blue{or} \\ \\ = 1$