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  2. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    Every 1.07 billion years (four occurrences in history of Earth) μ ± 7.5σ: 0.999 999 999 999 936: 6.382 × 10 −14 = 63.82 ppq: 1 in 15 669 601 204 101: Once every 43 billion years (never in the history of the Universe, twice in the future of the Local Group before its merger) μ ± 8σ: 0.999 999 999 999 999: 1.244 × 10 −15 = 1.244 ppq ...

  3. Birthday problem - Wikipedia

    en.wikipedia.org/wiki/Birthday_problem

    With M = 365 days in a year, the average number of people required to find a pair with the same birthday is n = 1 + Q(M) ≈ 24.61659, somewhat more than 23, the number required for a 50% chance. In the best case, two people will suffice; at worst, the maximum possible number of M + 1 = 366 people is needed; but on average, only 25 people are ...

  4. Mitt Romney - Wikipedia

    en.wikipedia.org/wiki/Mitt_Romney

    He also presided over the elimination of a projected $1.2–1.5 billion deficit through a combination of spending cuts, increased fees, and closing corporate tax loopholes. He did not seek reelection in 2006 , instead focusing on his campaign for the Republican nomination in the 2008 presidential election , which he lost to Senator John McCain .

  5. Wikipedia:Reference desk/Archives/Science/May 2006 - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    How do animals obtain water in the winter when water sources are frozen. Some hibernate; that's all I know. Melchoir 01:09, 1 May 2006 (UTC) []. Although this is a very silly question for us Canadians, I actually found a quote: "Studies in Canada have shown some cows have gone 50 to 60 days with snow as the sole water source without any adverse effects.