Count the number of squares in the picture below.

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

How many words can a pen with half refill write?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59