If A = {x: x is a vowel} and B ∪ C = {y: y is a letter in english alphabet}, then (A - B) ∩ (A - C) is
If U = {x : x ϵ N}, A = {x : x = 2n, n ∈ N} and B = {x : x is a prime number}, then A ∩ B is ___.
If A={x:x=odd number less than 3, and xϵN} then set A is