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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.
The 7.62×25mm Tokarev cartridge (designated as the 7.62 × 25 Tokarev by the C.I.P.) is a Soviet rimless bottleneck pistol cartridge widely used in former Soviet states and in China, among other countries.
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.
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.
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.
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.
The group, led by Ann and Nancy Wilson, have sold about 35 million records worldwide. [1] On the Billboard 200, Heart's self-titled album reached number one in 1985 and was certified quintuple platinum by the Recording Industry Association of America (RIAA).
7 ( seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube . As an early prime number in the series of positive integers, the number seven has greatly symbolic associations in religion, mythology, superstition and philosophy.
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.
65 is the smallest integer that can be expressed as a sum of two distinct positive squares in two (or more) ways, 65 = 8 2 + 1 2 = 7 2 + 4 2. It appears in the Padovan sequence, preceded by the terms 28, 37, 49 (it is the sum of the first two of these).