If `A={5^n-4n-1: n in N}` and `B={16(n-1) : n in N}`, wherę N is the set of natural numbers, then `AuuB` is equal to

if A= {5^(n)-4n-1: n in N} and B={16(n-1):n in N} then

If X={4^n -3n-1 , n in N} and Y={9(n-1), n in N} , where N is the set of natural numbers, then X uu Y is equal to :

If X = { 4^n-3n-1: n in N} and Y = { 9(n-1):n in N } where N is the set of natural numbers then X cup Y is equal to

If X={4^(n)-3n-1:n in N} and Y={9(n-1):n in N} ,where N is the set of natural numbers,then X uu Y is equal to (1)N(2)Y-X(3)X(4)Y

If X={4^n-3n-1:n in NN}andY={9(n-1):n in NN} where NN is the set of natural numbers, then X cupY is equal to__

If X = {4^(n) - 3n - 1: n in N} " and " Y = {9(n-1): n in N} , where N is the set of natural numbers, then X cup Y is equal to

If A={5^n-4n-1:ninNN} and B={16(n-1):ninNN} , then

If X""=""{4^n-3n-1"":""n in N}""a n d""Y""=""{9(n-1)"": n in N} , where N is the set of natural numbers, then XuuY is equal to (1) N (2) Y - X (3) X (4) Y

If X = {8^(n) -7n-1|n in N}Y = {49 (n-1)|n in N} where N is set of natural numbers , then :