MCQ
Let $U = \{ 1,\,2,\,3,\,4,\,5,\,6,\,7,\,8,\,9,\,10\} $, $A = \{ 1,\,2,\,5\} ,\,B = \{ 6,\,7\} $, then $A \cap B'$ is
  • A
    $B'$
  • $A$
  • C
    $A'$
  • D
    $B$

Answer

Correct option: B.
$A$
b
(b) $B' = \{ 1,\,2,\,3,\,4,\,5,\,8\,,9,\,10\} $

$\therefore A \cap B' = \{ 1,\,2,\,5\} \cap \{ 1,\,2,\,3,\,4,\,5,\,8,\,9,\,10\} = \{ 1,\,2,\,5\} = A$

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