If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

The dirtier I get, the whiter I look. Who am I?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

John walks into the daily grocery shop and steals a $100 bill from the shop. An hour later John returns to the shop and buys some daily products for $40. John pays the owner the $100 bill and therefore the owner returns him $60.

How much money did the owner lose?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

I have branches, but no fruit, trunk or leaves. What am I?

Count the number of squares in the picture below.

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?