Using eight eights and addition only, can you make 1000?

If your uncle’s sister is not your aunt, what relation is she to you?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

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.

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

what's the probability of getting a king or a queen from a pack of 52 cards?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3