Discrete Structures

1.If set A={1,3,5},B={2,4,6} and C={0,2,4,6,8}. Then write the universal set for all three sets. 2. If A={2,4,6,8} and B={6,8,10,12}. Find AB. 3. If A={3,5,7,9,11},B={7,9,11,13},C={11,13,15}. Find A(BC). 4. If A={1,2,3,4,5,6},B={2,4,6,8}. Find AB and B A