Let U be universal set of all the students of Class, XI of a coeducational school and 'A' be the set of all girls in Class XI. Find A!.

Let A= {Ram,Geeta, Akbar} be the set of students of class XI, who are in school hockey team. Let B ={Geeta, David , Ashok} be the set of students from class XI who are in the scholl foot ball team. Find AuuB and interpret the set.

Let A be the set of all 50 students of class X in a school. Let f : A rarr N be function defined by f(x) = roll numbers of the student x. Show that f is one-one but not onto

Write all the subsets of the set{-1,0,1}.

If U is the universal set and A is any set UbigcapA

Write down all the subsets of the following sets {a}

Let A be the set of all students of a boys school. Show that the relation R in A given by R ={(a, b): a is sister of b} is the empty relation and R' ={(a, b): the difference between heights of a and b is less than 3 meters} is the universal relation.

If R is the set of all real number and Q is the set of all rational numbers, then what is R - Q?

The table below shows the students of a class sorted according to their scores in a test Find the median score. .