"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

What has one eye, but can’t see?

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?

Which city is three-fifths chick two third cat and 50% goat?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Why do we preferably have round manhole covers and not square ones?

What is the fastest way to double your money?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?