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  4. If set A = 1, 3, 5 then number of elements in P P(A) is

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Q. If set $A = \{1, 3, 5\}$, then number of elements in $P\{P(A)\}$ is

Sets

Solution:

Given, $A = \{1, 3, 5\}$
$\therefore n\{(P(A)\} = 2^3 = 8$
$\therefore n[P\{P(A)\}] = 2^8 = 256$