I am white when I am dirty, and black when I am clean. What am I?

I have eight fingers and two thumbs but I do not live. What Am I?

What does below rebus means ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

Identify The phrase in the picture.

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?