[" Let "A" be a set represented by the squares of natural numbers and "x,y" are any two elements of "A],[" then "]

The set of natural numbers is represented by the letter -

If X and Y are any two sets, then: Xcap(XcupY)=

Let A be set of first 25 natural numbers and a,b,c are three distinct elements of set A, then number of unordered triplets (a,b,c) if-

Let N be the set of natural numbers and the relation R be defined on N such that R={(x,y) : y=2x, y in N} ,

Let A be a set of n(ge 3) distinct elements. The number of triplets (x, y, z) of the elements of A in which ar least two coordinates are equal is

Let A={x in W, " the set of whole numbers and" xlt3} . B={x in N, " the set of natural numbers and" 2 le x lt 4} and C={3, 4}, then how many elements will (AuuB)xxC contain?