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1.Set Theory
easy
यदि $A$ और $B$ विसंघित समुच्चय नहीं हैं, तब $n(A \cup B)$ =
A
$n(A) + n(B)$
B
$n(A) + n(B) - n(A \cap B)$
C
$n(A) + n(B) + n(A \cap B)$
D
$n(A)\,n(B)$
Solution
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Standard 11
Mathematics