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?

What occurs twice in a week, once in a year but never in a day?

What have one eye but still cannot see?

With the help clues provided in the image, can you find the 5 digit key?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

What is the fastest way to double your money?

Readers with the sharpest vision can find the eagle in the mountains in 6 seconds. Are you one of them? Test your observation skills now!

How is a fly different from a mosquito?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?