P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

What always comes into a house through the keyhole?

What does this simple rebus mean?

Chef Andrea has to light the kitchen stoves to open her restaurant for the day. There are three stoves in the kitchen: A glass stove, a brick stove, and a wood stove. She only has one match. Which does she light up first?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

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?

There was a strange boy who was born before his father. How can this be possible?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

What will you call your mother's brother's brother-in-law?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?