When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Can you solve this picture maths equation?

Why 1729 is a magic number? Answer Logically.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Do You See It?

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 you take 2 from 5 and leave 4?

How many times can you subtract the number 5 from 25?