Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Rearrange the letters in "new door" to make one word.

Can you count the number of lines in the below picture?

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

What kind of tree can you carry in your hand?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

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 ?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

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?