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1.Set Theory
medium
જો બે ગણ $A$ અને $B$ આપેલ હોય તો $A \cap (A \cup B)'$ મેળવો..
A
$A$
B
$B$
C
$\phi $
D
એકપણ નહી
Solution
(c) $A \cap (A \cup B)' = A \cap (A' \cap B')$,$(\because (A \cup B)' = A' \cap B'\,)$
$ = (A \cap A') \cap B'$, (by associative law)
$ = \phi \cap B'$,$(\because A \cap A' = \phi )$
$ = \phi $.
Standard 11
Mathematics
