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richard hamm

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last 3 solved tasks
Look at the picture, determine the pattern and replace the question mark with a number.
Tricky math! Can you solve this? If 11+11=4 and 12+12=9 Then 13+13=?
MATH PUZZLE: Can you replace the question mark with a number?

Camera obscura

In 1544, a solar eclipse was viewed at Louvain, which was later depicted in the first published book illustration of the camera obscura in use. Dutch mathematician and astronomer Reinerus Gemma-Frisius viewed a solar eclipse using a hole in one wall of a pavillion to project the sun's image upside down onto the opposite wall. He published the first illustrationof a camera obscura, depicting his method of observation of the eclipse in De Radio Astronomica et Geometrica (1545). Several astronomers made use of such a device in the early part of the 16th century. Both Johannes Kepler and Christopher Scheiner used a camera obscura to study the activity of sunspots. The technique was known to Aristotle (Problems, ca 330 BC).

The Cab Ride

A cab driver pulled up at a stop sign near Central Park in New York. A stark naked woman jumped out from behind a bush, opened the back door of the cab and demanded to be taken to the airport. The cab driver kept looking back at his passenger in the rear view mirror, and she became irritated and said, "Why do you keep staring at me?" The cab driver replied, "Well, you don't have any clothes on and no place to carry any money and I am wondering how you are going to pay your fare?"
The woman opened her legs and pointed to her crotch and said, "How about me paying with this?"
The cab driver looked back at the woman and said, "Do you have anything smaller?"    

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