This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

I am quite hot but become too cold if you remove the first two letters. What am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Look at the picture and find out which square is not linked with any of the other squares.

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

What's the best place to go shopping in the ocean?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

Can you count the number of triangles 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?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?