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

What occurs twice in a week, once in a year but never in a day?

They are three errirs in this question. Can you find them?

Our product and our sum always give the same answer. Who are we?

I always drive my customer away.

Who am I?

Can you spot the man between the coffee bean in the picture below ?

How many triangles can you find in this given picture?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?