GENERAL KNOWLEDGE: which mythical creature was the symbol of virginity?

Questions

according to one study, ---------- of lawns have some sort of lawn ornament?

all 50 ---------- are listed across the top of the lincoln memorial on the back of the $5 bill?

all hospitals in singapore use ---------- diapers?

aluminum is strong enough to support ---------- pounds per square inch?

an average of ---------- million credit cards are used every day in the united states?