Competitive Quantitative Aptitude Algebra Set Theory

Easy

If $n(A) = 3$,$n(B) = 6$ and $A \subseteq B$,then the number of elements in $A \cup B$ is equal to

A
$3$
B
$9$
C
$6$
D
None of these

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Competitive

Quantitative Aptitude Questions

Chapter

Algebra

Subtopic

Set Theory

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