If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

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?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

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.

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Can you find the key in the picture below?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Why 1729 is a magic number? Answer Logically.

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

How many times can you subtract the number two from the number fifty?