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  2. History of combinatorics - Wikipedia

    en.wikipedia.org/wiki/History_of_combinatorics

    This would have been the first attempt on record to solve a difficult problem in permutations and combinations. [2] The claim, however, is implausible: this is one of the few mentions of combinatorics in Greece, and the number they found, 1.002 × 10 12, seems too round to be more than a guess. [3] [4]

  3. Combinatorial number system - Wikipedia

    en.wikipedia.org/wiki/Combinatorial_number_system

    The number associated in the combinatorial number system of degree k to a k-combination C is the number of k-combinations strictly less than C in the given ordering. This number can be computed from C = {c k, ..., c 2, c 1} with c k > ... > c 2 > c 1 as follows.

  4. Combinatorial explosion - Wikipedia

    en.wikipedia.org/wiki/Combinatorial_explosion

    Then 1! = 1, 2! = 2, 3! = 6, and 4! = 24. However, we quickly get to extremely large numbers, even for relatively small n . For example, 100! ≈ 9.332 621 54 × 10 157 , a number so large that it cannot be displayed on most calculators, and vastly larger than the estimated number of fundamental particles in the observable universe.

  5. Scientists Say Complex Life Is an Astounding 1.5 Billion ...

    www.aol.com/scientists-complex-life-astounding-1...

    A new study says complex life began 1.5 billion years earlier, influenced by ancient volcanic activity, reshaping our understanding of life's timeline on Earth.

  6. Scientists Solved a 1.75-Billion-Year Mystery About How Life ...

    www.aol.com/scientists-solved-1-75-billion...

    News. Science & Tech

  7. History of large numbers - Wikipedia

    en.wikipedia.org/wiki/History_of_large_numbers

    Different cultures used different traditional numeral systems for naming large numbers.The extent of large numbers used varied in each culture. Two interesting points in using large numbers are the confusion on the term billion and milliard in many countries, and the use of zillion to denote a very large number where precision is not required.

  8. 8 billion-year-old radio signal reaches Earth

    www.aol.com/mysterious-fast-radio-burst-traveled...

    Astronomers have detected one of the most distant and energetic mysterious fast radio bursts in space, a millisecond-long blast of radio waves that traveled 8 billion years to reach Earth.

  9. Large numbers - Wikipedia

    en.wikipedia.org/wiki/Large_numbers

    The number of cells in the human body (estimated at 3.72 × 10 13), or 37.2 trillion/37.2 T [3] The number of bits on a computer hard disk (as of 2024, typically about 10 13, 1–2 TB), or 10 trillion/10T; The number of neuronal connections in the human brain (estimated at 10 14), or 100 trillion/100 T