Question

IfA= {1, 2, 3, 4, 5), then the number of proper subsets of A is​

Answer 1

number of terms in A = n = 5

$2^{n} \: is \: the \: formula$

$so \: 2 ^{5} = 32$

Subsets are:

{1},{2},{3},{4},{5},{1,2},{2,3},{3,4},{4,5},{5,1},{1,2,3},{2,3,4},{4,5,1},{5,1,2},{1,2,3,4},{2,3,4,5},{3,4,5,1}{4,5,1,2},{5,1,2,3},{1,3,5},{2,4,1},{3,5,2},{4,1,3},{5,2,4},{1,3,4},{2,4,5},{1,4},{2,5},{3,1},{4,2},{A},{ }.

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