What is this answer?

You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?

Which number completes the inequality? 2/3 < _ < 7/9

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.