How many squares on a chessboard?
[25] How many squares on a chessboard? - How many squares on a chessboard? - #brainteasers #math #riddles - Correct Answers: 98 - The first user who solved this task is Sanja Šabović
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How many squares on a chessboard?

How many squares on a chessboard?
Correct answers: 98
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Software Development Cycles

Software Development Cycles
1. Programmer produces code he believes is bug-free.
2. Product is tested. 20 bugs are found.
3. Programmer fixes 10 of the bugs and explains to the testing department that the other 10 aren’t really bugs.
4. Testing department finds that five of the fixes didn’t work and discovers 15 new bugs.
5. Repeat three times steps 3 and 4.
6. Due to marketing pressure and an extremely premature product announcement based on overly-optimistic programming schedule, the product is released.
7. Users find 137 new bugs.
8. Original programmer, having cashed his royalty check, is nowhere to be found.
9. Newly-assembled programming team fixes almost all of the 137 bugs, but introduce 456 new ones.
10. Original programmer sends underpaid testing department a postcard from Fiji. Entire testing department quits.
11. Company is bought in a hostile takeover by competitor using profits from their latest release, which had 783 bugs.
12. New CEO is brought in by board of directors. He hires a programmer to redo program from scratch.
13. Programmer produces code he believes is bug-free…
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Georg von Hevesy

Died 5 Jul 1966 at age 80 (born 1 Aug 1885).Hungarian-Danish-Swedish chemist who was awarded the 1943 Nobel Prize for developing isotopic tracer techniques which enabled understanding of the chemical paths of life processes. For example, a radioactive isotope of phosphorus, prepared in solutions of sodium phosphate can be injected into animals and humans, and blood samples analysed. This show that the radio-phosphorus content in human blood falls after only 2 hours to just 2% of its original amount as it changes places with the phosphorus atoms within the tissues, organs and skeleton. He also discovered, with Dirk Coster, the element hafnium (1923). He published Adventures in Radioisotope Research in two volumes (1962).[EB and a NYT obituary give date of death 5 Jul 1966. DSB gives 6 Jul 1966.]
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