If P is a subset of Q, then `P uu Q`=

If P is a proper subset of Q, then P nn Q =

If P and Q are subsets of mu , then P - Q =

If mu is the universal set and P is a subset of mu then what is P nn(P-mu)uu(mu-P) equal to

If P and Q are two non-empty subsets of a set X such that P is not a subset of Q, then:

X={1,2,3,....2017} and A sub X;B sub X;A uu B sub X here P sub Q denotes that P is subset of Q(P!=Q) Then number of ways of selecting unordered pair of sets A and B such that A uu B sub X.

Suppose A is a set containing n elements. Two subsets P and Q of A are chosen at random. If the probability that P is a subset of Q is 243/1024, then n is equal to