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# Find the intersection of each pair of the following set :(i) X={1,3,5},Y={1,2,3}

$\begin{array}{1 1}(A)\;\{1,3,5\}&(B)\;\{1,3\}\\(C)\;\{1,2,3\}&(D)\;\{1,2,3,5\}\end{array}$

X={1,3,5}
Y={1,2,3}
Here,1,3 are the only elements which are common to both X and Y
Hence $X\cap Y=\{1,3\}$
Hence (B) is the correct answer.