If P and Q are disjoint, then P-Q=______ and Q-P=_________

If P and Q are disjoint then (P capQ) ' is______

If P = -15 and Q = 5 find (P-Q) ÷ (P+Q).

If 2p+q=11 and p+2q=13, then p+q=

P and q are positive numbers such that p^q =q^p and q =9p . The value of p is

If (x,2p+q)=(y,p+2q) then p-q=_______

If p and q are two statements , prove that ~( p vee q) -= (~p) ^^ ( ~q )

If P = {all months of a year } and Q = {months of a year whose name begin with letter M } find P cup Q and P cap Q State whether the sets P and Q are joint or disjoint sets .

If a set A has 5 elements , then the number of ways of selecting two subsets P and Q from A such that P and Q are mutually disjoint is