What occurs twice in a week, once in a year but never in a day?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

How can you take 2 from 5 and leave 4?

What you cannot hold but it is yours?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

The Little ant seems to be always confused. Do you know why?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?