" 12.If "A={x,x=4n+1,2<=n<=5}" ,then find number of subsets of "A" ."

If A={x:x=4n+1,2<=n<=5,n varepsilon N}, then the number of subsets of A is :

Find the number of subsets of A if A = { X : X = 4n +1, 2 lt= n lt= 5, n in NN }

If A={x:x=3^(n)-2n-1, n in N} and B={x:x = 4(n-1), n in N} . Then

If A={x:x=3^(n)-2n-1, n in N} and B={x:x = 4(n-1), n in N} . Then

If A={x : x=n , n in N} , B={x : =2n , n in N} , c={x : x =4n , n in N} , then

If A={x : x=n , n in N} , B={x : =2n , n in N} , c={x : x =4n , n in N} , then

Which of the following sets are equal ? A= {x:x in N,x <4), B= {1,2, 3}, C={1 ,3}, D = {x:x in N, x is odd, x < 5}, E= {1,2, 3, 2}, F = {3,3,1}.

If ((1 +i)/(1 -i))^(x) =1 , then (A) x=2n+1 (B) x=4n (C) x=2n (D) x=4n+1, n in N.