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  2. Josephus problem - Wikipedia

    en.wikipedia.org/wiki/Josephus_problem

    Such games are used to pick out a person from a group, e.g. eeny, meeny, miny, moe. A drawing for the Josephus problem sequence for 500 people and skipping value of 6. The horizontal axis is the number of the person. The vertical axis (top to bottom) is time (the number of cycle). A live person is drawn as green, a dead one is drawn as black. [1]

  3. Bridge and torch problem - Wikipedia

    en.wikipedia.org/wiki/Bridge_and_torch_problem

    The torch itself may expire in a short time and so serve as the time limit. [further explanation needed] In a variation called The Midnight Train, for example, person D needs 10 minutes instead of 8 to cross the bridge, and persons A, B, C and D, now called the four Gabrianni brothers, have 17 minutes to catch the midnight train. [1]

  4. Threefold repetition - Wikipedia

    en.wikipedia.org/wiki/Threefold_repetition

    and then Fischer wrote his next move 34. Qe2 (third time) ½-½. on his scoresheet, which is the third appearance of the position with Black to move, and he claimed a draw. [12] At first Petrosian was not aware of what was going on. Incidentally, this was the first time a draw by threefold repetition had been claimed in his career.

  5. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    The micrometre (SI symbol: μm) is a unit of length in the metric system equal to 106 metres (⁠ 1 / 1 000 000 ⁠ m = 0. 000 001 m). To help compare different orders of magnitude, this section lists some items with lengths between 106 and 105 m (between 1 and 10 micrometers, or μm). ~0.7–300 μm – wavelength of infrared radiation

  6. 40-yard dash - Wikipedia

    en.wikipedia.org/wiki/40-yard_dash

    In terms of judging a person's speed, the best method of timing is through lasers which start and stop the times when passed through. A laser start (from a stationary position) is more accurate for measuring pure speed as it does not register a runner's reaction time, however, this method of timing a 40-yard dash can affect the accuracy by as much as 0.5 seconds with the manual stopwatch method.

  7. Human height - Wikipedia

    en.wikipedia.org/wiki/Human_height

    The people of Ancient Egypt stood around 167 cm (5 ft 6 in) for males and 157 cm (5 ft 2 in) for females. [64] The Ancient Greeks averaged 166 cm (5 ft 5 in) for males and 154 cm (5 ft 1 in) for females. The Romans were slightly taller, with an average height of 169 cm (5 ft 7 in) for males and 158 cm (5 ft 2 in) for females. [65]

  8. Our DNA is 99.9 percent the same as the person sitting next ...

    www.aol.com/article/2016/05/06/our-dna-is-99-9...

    For humans, we're 99.9 percent similar to the person sitting next to us. The rest of those genes tell us everything from our eye color to if we're predisposed to certain diseases.

  9. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Here, 2 is being multiplied by 3 using scaling, giving 6 as a result. Animation for the multiplication 2 × 3 = 6 4 × 5 = 20. The large rectangle is made up of 20 squares, each 1 unit by 1 unit. Area of a cloth 4.5m × 2.5m = 11.25m 2; 4 ⁠ 1 / 2 ⁠ × 2 ⁠ 1 / 2 ⁠ = 11 ⁠ 1 / 4 ⁠