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Cathy Martin

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221. Aleena Sibi 14
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223. Cathy Martin 14
224. Babu Palathingal 14
225. Kayla Do 13
last 3 solved tasks
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Leon Battista Alberti

Born 18 Feb 1404; died 25 Apr 1472 at age 68. Italian artist and geometrist who “wrote the book,” the first general treatise Della Pictura (1434) on the the laws of perspective, establishing the science of projective geometry. Alberti also worked on maps (again involving his skill at geometrical mappings) and he collaborated with Toscanelli who supplied Columbus with the maps for his first voyage. He also wrote the first book on cryptography which contains the first example of a frequency table.

One night, as a couple lay ...

One night, as a couple lay down for bed, the husband gently tapped his wife on the shoulder and started rubbing her arm. His wife turned over and said, "I'm sorry honey, I've got a gynecologist appointment tomorrow and I want to stay fresh." Her husband, rejected, turned over and tried to sleep. A few minutes later, he rolled back over and tapped his wife again. This time he whispered in her ear, "Do you have a dentist appointment tomorrow too?"

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