What's the only room from which no one can enter or leave

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Can you name four days which start with the letter 'T'?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?