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  2. The Magical Number Seven, Plus or Minus Two - Wikipedia

    en.wikipedia.org/wiki/The_Magical_Number_Seven...

    It is often interpreted to argue that the number of objects an average human can hold in short-term memory is 7 ± 2. This has occasionally been referred to as Miller's law.

  3. Power of two - Wikipedia

    en.wikipedia.org/wiki/Power_of_two

    A power of two is a number of the form 2n where n is an integer, that is, the result of exponentiation with number two as the base and integer n as the exponent . Powers of two with non-negative exponents are integers: 20 = 1, 21 = 2, and 2n is two multiplied by itself n times.

  4. 7.63×25mm Mauser - Wikipedia

    en.wikipedia.org/wiki/7.63×25mm_Mauser

    The 7.63×25mm Mauser (.30 Mauser Automatic) round is a bottleneck, rimless, centerfire cartridge, originally developed for the Mauser C96 service pistol. This cartridge headspaces on the shoulder of the case. It later served as the basis for the 7.62mm Tokarev cartridge commonly used in Soviet and Eastern Bloc weapons.

  5. 63 (number) - Wikipedia

    en.wikipedia.org/wiki/63_(number)

    63 is the sum of the first six powers of 2 (2 0 + 2 1 + ... 2 5). It is the eighth highly cototient number, and the fourth centered octahedral number after 7 and 25.

  6. Divisibility rule - Wikipedia

    en.wikipedia.org/wiki/Divisibility_rule

    The basic rule for divisibility by 4 is that if the number formed by the last two digits in a number is divisible by 4, the original number is divisible by 4; [2] [3] this is because 100 is divisible by 4 and so adding hundreds, thousands, etc. is simply adding another number that is divisible by 4.

  7. Magic square - Wikipedia

    en.wikipedia.org/wiki/Magic_square

    Thus, 2 n(n-2)/8 × 2 n(n-2)/8 = 2 n(n-2)/4 equivalent magic squares can be obtained by combining such interchanges. For odd square, since there are (n - 1)/2 same sided rows or columns, there are (n - 1)(n - 3)/8 pairs of such rows or columns that can be interchanged.

  8. 11.22.63 - Wikipedia

    en.wikipedia.org/wiki/11.22.63

    11.22.63 is an American science fiction thriller television miniseries based on the 2011 novel 11/22/63 by Stephen King, and consisting of eight episodes, in which a time traveler attempts to stop the assassination of John F. Kennedy.

  9. Telephone numbers in the Philippines - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    The Philippines is assigned an international dialing code of +63 by ITU-T. Telephone numbers are fixed at eight digits for area code 02 , and seven digits for area codes from 03X to 09X , with area codes fixed at one, two, or three digits (a six-digit system was used until the mid-1990s; four to five digits were used in the countryside).

  10. Isotopes of copper - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_copper

    Both stable isotopes of copper (63 Cu and 65 Cu) have nuclear spin of 3/2−, and thus produce nuclear magnetic resonance spectra, although the spectral lines are broad due to quadrupolar broadening. 63 Cu is the more sensitive nucleus while 65 Cu yields very slightly narrower signals.

  11. Saginaw Spirit - Wikipedia

    en.wikipedia.org/wiki/Saginaw_Spirit

    Saginaw Spirit was named by an elementary school student attending Handley Elementary after a contest was held to name the new coming team. The team traces its roots back to St. Catharines, Ontario, where it played as the Falcons, Teepees, and Black Hawks from 1943 to 1976.