If `P=(a,b,c,d)` and `Q=(1,2,3,4,5)` then `n(PxxQ)`=________

If n(P)=2439 and Q=phi then n(PxxQ)= ________

If n(P)=2 and n(Q)=5000, then n(PxxQ)= ______

If P={m,n) and Q={n,m} , then PxxQ={(m,n),(n,m)}

If A={1,2,3,4,5},B ={p,q,r,s} then n(A xx B ) =

Define and write the cartesian product of two sets P=(a,b,c) and Q = {2,3}. Is PxxQ = QxxP true?

If P (1,-3), Q ( 2,-5), R ( -4,7) then find d(P,Q) d(P,R)

If A = {a, b, c} , B = {b, c, d} , P = {a, c, d) , Q = {b, d, e} , show that (AxxB)cap(PxxQ) =(AcapP)xx(BcapQ)

If P = {1,2,3,4,5} and Q = {a,b,c}, then the number of onto functions from P to Q is