Sets Set 5

If is the set of squares and is the set of rectangles, then is

Let be a family of sets and be a relation on defined by is disjoint from Then, is

If , then the power set of is

In a town of familiesit was found that 40% families buy newspaper families buy newspaper and 10% families buy newspaper families buy and 3% buy and and 4% buy and If 2% families buy all the three newspapers, then the number of families which buy only is

Let and be two equivalence relations on a set Then,

Which of the following is true?

Let Which of the following is not an equivalence relation on

Let . Then, the number of sets such that is

If then the number of elements in the set is

Let and denotes null set. If denotes cartesian product of the sets and ; then is