What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

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

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

What does below Rebus mean ?

esgg sgeg gegs gsge

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

The more you take me, the more you leave me behind.
Who Am I?