There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

By using 'because' continuously three times, can you make an English statement ?

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?

I have an eye but still cannot see.

Who am I?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

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

The centre of the third figure is empty. What digit should fit inside?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

What begins with T, ends with T, and has T in it?