Quale è la risposta? What is the answer to this riddle?

Do you know the answer to these riddles? Conoscete le risposte ai questi riddles?   Q: Which is the most curious letter? A: Y? Q: What kind of cheese is made backwards? A: Edam. Q: If a red-house is made of red bricks, has a red wooden door, and a red roof, and a yellow-house [...]