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  2. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    Every prime number p divides a Fibonacci number that can be determined by the value of p modulo 5. If p is congruent to 1 or 4 modulo 5, then p divides F p−1, and if p is congruent to 2 or 3 modulo 5, then, p divides F p+1. The remaining case is that p = 5, and in this case p divides F p.

  3. Arabic numerals - Wikipedia

    en.wikipedia.org/wiki/Arabic_numerals

    The list on the right shows the Fibonacci sequence: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377. The 2, 8, and 9 resemble Arabic numerals more than Eastern Arabic numerals or Indian numerals . Leonardo Fibonacci was a Pisan mathematician who had studied in the Pisan trading colony of Bugia , in what is now Algeria , [ 15 ] and he ...

  4. The Trauma Code: Heroes on Call - Wikipedia

    en.wikipedia.org/wiki/The_Trauma_Code:_Heroes_on...

    The Trauma Code: Heroes on Call (Korean: 중증외상센터) is a 2025 South Korean medical comedy television series written by Choi Tae-kang, directed by Lee Do-yoon, and starring Ju Ji-hoon, Choo Young-woo, Ha Young, Yoon Kyung-ho, and Jung Jae-kwang.

  5. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    For example, for 2 5 a + 1 there are 3 increases as 1 iterates to 2, 1, 2, 1, and finally to 2 so the result is 3 3 a + 2; for 2 2 a + 1 there is only 1 increase as 1 rises to 2 and falls to 1 so the result is 3a + 1. When b is 2 k − 1 then there will be k rises and the result will be 3 k a + 3 k − 1.

  6. Teka - Wikipedia

    en.wikipedia.org/wiki/Teka

    The Teka Group is a multinational company founded in Germany in 1924 and engaged in the manufacture and commercialisation of kitchen products. [1] It specializes in sinks, exhaust hoods, hobs and ovens. The group has 14 factories [2] [3] in Europe, [4] the Americas and Asia [5] and commercializes its products in 116 countries. [6]

  7. Numeric keypad - Wikipedia

    en.wikipedia.org/wiki/Numeric_keypad

    A numeric keypad is also useful on Windows PCs for typing alt codes for special symbols; for example, the degree symbol, °, can be typed on these computers with the sequence Alt+0+1+7+6. [ 6 ] To maintain their compact size, most laptops do not include a numeric keypad on their keyboard (though they can sometimes be found on larger models ...

  8. Avalanche photodiode - Wikipedia

    en.wikipedia.org/wiki/Avalanche_photodiode

    An avalanche photodiode (APD) is a highly sensitive type of photodiode, which in general are semiconductor diodes that convert light into electricity via interband excitation coupled with impact ionization.

  9. Airport Police Division - Wikipedia

    en.wikipedia.org/wiki/Airport_Police_Division

    In 1981, airport operations - and the APD as well - moved to Changi Airport. In April 2000, APD shifted to a new police station to make way for the construction of Terminal 3. [4] APD works alongside SPF's Protective Security Command (ProCom) to ensure the safety of civilians, and maintain law and order within Singapore Changi Airport.