Question

y = { x : x even number less than 20 }

Answer 1

Answer:

y = { 2,4,6,8,10,12,14,16,18}

is answer

Answer 2

Answer:

{2,4,6,8,10,12,14,16,18} or {0,2,4,6,8,10,12,14,16,18}

Step-by-step explanation:

1. if the answer set belongs to N (natural number)

then answer set ={2,4,6,8,10,12,14,16,18}.

2.Or if the answer set belongs to Z (whole number) then answer set = {0,2,4,6,8,10,12,14,16,18}.