Answer:
{2, 4, 6, 8}
Explanation:
Even numbers are of the form 2n, where n is any integer. If you want positive even numbers less than 10, you require ...
0 < 2n < 10
0 < n < 5 . . . . . . divide by 2
That is, n = {1, 2, 3, 4}, so 2n = {2, 4, 6, 8}.
The positive even integers less than 10 are {2, 4, 6, 8}.