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21 is also the first non-trivial octagonal number. [5] It is the fifth Motzkin number, [6] and the seventeenth Padovan number (preceded by the terms 9, 12, and 16, where it is the sum of the first two of these). [7] In decimal, the number of two-digit prime numbers is twenty-one (a base in which 21 is the fourteenth Harshad number).
A 21-gun salute is the most commonly recognized of the customary gun salutes that are performed by the firing of cannon or artillery as a military honor. As naval customs evolved, 21 guns came to be fired for heads of state, or in exceptional circumstances for heads of government, with the number decreasing with the rank of the recipient of the ...
A 21-gun salute is the most commonly recognized of the customary gun salutes that are performed by the firing of cannon or artillery as a military honor. As naval customs evolved, 21 guns came to be fired for heads of state, or in exceptional circumstances for heads of government, with the number decreasing with the rank of the recipient of the honor.
Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, [9] together with yttrium and the lanthanides. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia. [10]
Chromosome 21 is both the smallest human autosome and chromosome, [4] with 46.7 million base pairs (the building material of DNA) representing about 1.5 percent of the total DNA in cells. Most people have two copies of chromosome 21, while those with three copies of chromosome 21 (trisomy 21) have Down syndrome.
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Sophia, meaning Prudence or Wisdom (the dancing woman in the center), is spirit or the sacred center, the fifth element. Prudence is the fourth of the Cardinal virtues in the tarot. [4] The lady in the center is a symbol of the goal of mystical seekers. In some older decks, this central figure is Christ, whereas in others it is Hermes.
Donald Trump and his running mate J.D. Vance. Donald Trump recently announced that he was thinking about declaring a national emergency once he moves into the White House in order to give himself ...