The cartesian product `A xx A` has 9 elements among which are found (-1,0) and (0,1).Find the set A and the remaining elements of ` A xx A`.

A and B are two sets such that (A xx B) consists of 6 elements. If three elements-of (Axx B) are (1, 3), (2, 5) and (3, 3), find the remaining elements of (A xx B) .

Find the value of. (3^@ + 4 ^-1) xx 2^2

State whether B is a subset of A or not:A = the set of the real roots of x^4 -1 = 0 , B = the set of the real roots of x^2 -1=0

In the equation x^2 + px+ 48 = 0 , 48 is misprinted as 45 and the roots are found to be 5 and 9,Find the actual roots.

Let R be the relation defined in the set A={1,2,3,4,5,6,7,8,9} by R={(a,b,):" both a and b are either odd or even"} . Show that R is an equivalence relation. Further show that all the lements of the subset {1,3,5,7,9} are related to one another and all the lement of the subset {2,4,6,8} are related to one another but no element of the subset {1,3,5,7,9} is related to any element of the subset {2,4,6,8} .

If A = {1, 2, 3, 4} and B = {1, 3} find Which of the elements of P (A) are in P (B) ?

State which of the following sets are null set or singleton set:the set of real roots of x + 1 = 0