What is the Set Complement of -4, -2, 0, 2, 4, 5, 6

Which one ? is the answer and how to find this answer

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?