The set for the event of spinning a spinner to land on a even number is,
The complement of any event is obtained by removig the event from the total possible events. So the complement of event of spinning a spinner to land on an even number is,
OR
The complement of event of spinning a spinner to land on an even number if the numbers were listed 1-8 is all possible odd numbers for the event. So the spinner is landing on 1, 3, 5 or 7.
Answer: The spinner landing on 1, 3, 5, or 7