What has 13 hearts but no other organs?

At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?

People put me on the table and cut me but do not eat me. What am I?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

What is so fragile that saying its name breaks it?

What is both possible and impossible at the same time?