You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Can you count the number of triangles in the given figure?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

What has one eye, but can’t see?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

What number do you get when you multiply all of the numbers on a telephone's number pad?

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?