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How many triangles can be formed from the given points?

Author: Nebojsa Jevtovic (Serbia)

Correct answers: 43

The first user who solved this task is Sanja Šabović.

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Out of the mouths of babes

I told my kids that we are no longer saying “shut up” because it sounds mean and can hurt people’s feelings. So my kids are getting creative with their use of words. My 9-year-old daughter was talking and talking, and my 6-year-old son couldn’t take it anymore and said, “SILENCE YOU PEASANT!”

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Hodgkin's disease

In 1832, Thomas Hodgkin, age 34, took a paper to the Medical and Surgical Society in London. Since he wasn't a member, the Society's secretary had to read it for him. Only eight members were present. The title was Some Morbid Appearances of the Absorbent Glands and Spleen. It was mostly ignored; only late in that century was this rare lymphatic disease named Hodkin's disease in England, long after the Germans had started calling it Hodgkin's Krankheit. Although Marcello Malpighi had written about the disease in 1666, Hodgkin's paper was the first to well document the disease. (With present knowledge, of the seven cases Hodgkin described, only three were legitimate examples; four cases were other illnesses that mimic Hodgkin's disease.)

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