On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

What is the riddle which can be asked all day with a different correct answer each time.

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Count the number of triangles in the given picture.

Can you find out the remainder when 3^300 is divided by 5?

Can you count the number of blocks in the picture below?

What kind of tree can you carry in your hand?

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
=========
T O W E L
=========

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211