What has no start, end, or centre?

Which digit occurred maximum times between the number 1 and 1000?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What kind of band never plays music?

Why do you find that most of the buildings are deprived of the 13th floor?