What is always in front of you but can’t be seen?

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?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?

What is common among 11, 69, and 88?

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 ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

The answer I give is yes, but what I mean is no. What was the question?