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

$\begin{array}{1 1}(A)\;\{3,4,5,6,7,8,9,10\}\\(B)\;\{1,2,3,4\}\\(C)\;\{1,2,3,5,6\}\\(D)\;\{1,2,3,4,5\}\end{array} $

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1 Answer

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$B=\{3,4,5,6\}$
$C=\{5,6,7,8\}$
$D=\{7,8,9,10\}$
$B \cup C\cup D=\{3,4,5,6\}\cup \{5,6,7,8\}\cup \{7,8,9,10\}$
$\Rightarrow \{3,4,5,6,7,8,9,10\}$
Hence (A) is the correct answer.
answered May 27, 2014 by sreemathi.v
 
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