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Combinations and permutations in the mathematical sense are described in several articles. Described together, in-depth: Twelvefold way; Explained separately in a more accessible way: Combination; Permutation; For meanings outside of mathematics, please see both words’ disambiguation pages: Combination (disambiguation) Permutation ...
In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter (unlike permutations).For example, given three fruits, say an apple, an orange and a pear, there are three combinations of two that can be drawn from this set: an apple and a pear; an apple and an orange; or a pear and an orange.
Download as PDF; Printable version ... move to sidebar hide. The list of all single-letter-double-digit combinations contains 7,800 elements of the form ...
List of two-letter combinations Uppercase-lowercase combinations Lowercase combinations are not differentiated from uppercase-lowercase combinations (for example, ba is the same page as Ba ).
Sb 2 O 3; Fool's gold – a mineral, iron disulfide or pyrite; can form oil of vitriol on contact with water and air. Fulminating silver – principally, silver nitride, formed by dissolving silver(I) oxide in ammonia. Very explosive when dry. Fulminating gold – a number of gold based explosives which "fulminate", or detonate easily.
The page for X should have the list of Xa..Xz AND the list for XA..XZ on it (at the moment, for most X, only the first of these is provided); The page for Xx should always include a "see also XX" line, and vice versa. seglea 07:43, 22 Jan 2004 (UTC) Definitely agreed. -Sean 07:48, 28 Feb 2004 (UTC)
This list of all two-letter combinations includes 1352 (2 × 26 2) of the possible 2704 (52 2) combinations of upper and lower case from the modern core Latin alphabet. A two-letter combination in bold means that the link links straight to a Wikipedia article (not a disambiguation page).
Alchemical Symbols is a Unicode block containing symbols for chemicals and substances used in ancient and medieval alchemy texts. Many of the symbols are duplicates or redundant with previous characters. [3] Few fonts support more than a few characters in this block as of 2021. One that does and is free for personal use is Symbola 14.0.