The set of natural numbers which are multiples of 2 and less than 15 Answer: Roster/Listing Method: {2, 4, 6, 8, 10, 12, 14} Set builder method: {x | x is a natural number multiple of 2; 2 ≤ x < 15} Step-by-step explanation: Natural numbers are also counting numbers: 1, 2, 3, 4, ... Natural numbers that are multiples of 2 less than 15: 2, 4, 6, 8, 10, 12, 14 Roster/Listing Method: {2, 4, 6, 8, 10, 12, 14} Set builder method: {x | x is a natural number multiple of 2; 2 ≤ x < 15}