Riddles!

Hi sorry I've not been posting a lot lately, but now I'm here. My post is just riddles I found. Here are the questions:

Q1: There was once a pink one-storey house and inside the house there was a pink t.v, a pink lamp, a pink shower, a pink bed, a pink cat and basically everything inside the house was pink! What were the colours of the stairs?

Q2: A boy was walking down the street with a doctor. The boy is the doctor's son but the doctor isn't the boy's father. How is that possible?

Q3: What cheese is made backwards?

Q4: Mary’s father has 5 daughters – Nana, Nene, Nini, Nono. What is the fifth daughters name?

Q5: What month do people sleep the least in? 

Q6: We see it once in a year, twice in a week, and never in a day. What is it?

Q7: Mr. Blue lives in the blue house, Mr. Pink lives in the pink house, and Mr. Brown lives in the brown house. Who lives in the white house?

Answers:

A1: There are no stairs!

A2: The doctor is the boy's mother.

A3: Edam.

A4: If you answered Nunu, you're wrong! The answer is Mary.

A5: February 

A6: The letter 'E'.

A7: The president.

Thanks for reading!