A = {x ∈ Z | 2 < x < 7 }
A= { 0,2,4,6,8,10,12,14...}
A={2,3,4,5,6,7,8,9,10,11,12}
A = { a,e,i,o,u }
A = { x ∈ N/ 6 < x < 11}
A ={ x ∈ Z/ 2< x < 9}
A={los números primos menores a 15}
A = {1,2,3,4,5,6,7,8,9}
A = {... -5,-4,-3,-2,-1}
A = { x | x ∉ Q}
A = { 3,4,5,6 }
A = { x = 𝜋}
A = { 7,8,9,10 }
A = {x | 1 ≤ x ≤ 9}
A = { x | x ∈ vocales }
A = { x | x ∈ Z negativos}
A={x | 2 ≤ x ≤ 12}
A= { x | x = par}
A= {2,3,5,7,11,13}
A ={3,4,5,6,7,8}