What is full of holes but still holds water?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

Can you write down eight eights so that they add up to one thousand?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

There is something which is always coming but never arrives?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

How can you tell a raw egg from a hard-boiled egg?

Can you name some countries which do not have the alphabet 'A' in them?