Can you fill the blank with the correct number?

6 30 870 756030 _____

Find the Goldfish below the given Image.

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Replace the question mark with the correct number.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

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

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

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?

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

What breaks yet never falls, and what falls yet never breaks?