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Home  >>  CBSE XI  >>  Math  >>  Sets

If $A=\{1,2,3,4\},B=\{3,4,5,6\},C=\{5,6,7,8\}$ and $D=\{7,8,9,10\}$ Find $B\cup C$

$\begin{array}{1 1}(A)\;\{3,4,5,6,7,8\}\\(B)\;\{3,4,5\}\\(C)\;\{5,6,8\}\\(D)\;\{7,8\}\end{array} $

1 Answer

$B=\{3,4,5,6\},C=\{5,6,7,8\}$
$B\cup C=\{3,4,5,6\}\cup \{5,6,7,8\}$
$\Rightarrow \{3,4,5,6,7,8\}$
Hence (A) is the correct answer.
answered May 26, 2014 by sreemathi.v
 
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