There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Where do you go to learn how to make ice cream?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

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.

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

The answer I give is yes, but what I mean is no. What was the question?