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

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

A father's child, a mother's child, yet no one's son.

Who am I?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What Adam and Eve do not have but the rest of the people have?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Do You See It?