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  2. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    This method requires the memorization of squares from 1 to a where a is the absolute difference between n and 100. For example, students who have memorized their squares from 1 to 24 can apply this method to any integer from 76 to 124. The square of n (i.e., 100 ± a) is 100(100 ± 2a) + a 2

  3. Psychological pricing - Wikipedia

    en.wikipedia.org/wiki/Psychological_pricing

    In this pricing method, retail prices are often expressed as just-below numbers: numbers that are just a little less than a round number, e.g. $19.99 or £2.98. [1] There is evidence that consumers tend to perceive just-below prices (also referred to as "odd prices") as being lower than they are, tending to round to the next lowest monetary unit.

  4. Ireland - Wikipedia

    en.wikipedia.org/wiki/Ireland

    The island is divided between the Republic of Ireland, an independent state, and Northern Ireland, a constituent country of the United Kingdom. They share an open border and both are part of the Common Travel Area and as a consequence, there is free movement of people, goods, services and capital across the border.

  5. Timor-Leste - Wikipedia

    en.wikipedia.org/wiki/Timor-Leste

    Timor-Leste, [a] also known as East Timor, [b] officially the Democratic Republic of Timor-Leste, is a country in Southeast Asia.It comprises the eastern half of the island of Timor, the exclave of Oecusse on the island's north-western half, and the minor islands of Atauro and Jaco.

  6. Scotland in the early modern period - Wikipedia

    en.wikipedia.org/wiki/Scotland_in_the_early...

    A table of ranks in early modern Scottish society Below the king were a small number of dukes (usually descended from very close relatives of the king) and earls , who formed the senior nobility. Under them were the barons, who in this period were beginning to merge with the local tenants-in-chief to become lairds [ 102 ] a group roughly ...

  7. Titanic - Wikipedia

    en.wikipedia.org/wiki/Titanic

    92 ft 6 in (28.2 m) Height: 175 ft (53.3 m) (keel to top of funnels) Draught: 34 ft 7 in (10.5 m) Depth: 64 ft 6 in (19.7 m) Decks: 9 (A–G) Installed power: 24 double-ended and five single-ended boilers feeding two reciprocating steam engines for the wing propellers, and a low-pressure turbine for the centre propeller; [3] output: 46,000 HP ...

  8. Pound sterling - Wikipedia

    en.wikipedia.org/wiki/Pound_sterling

    The smallest coin in 1971 was the 1 ⁄ 2 p, worth about 6.4p in 2015 prices. The following table shows the equivalent amount of goods and services that, in a particular year, could be purchased with £1. [154] The table shows that from 1971 to 2023, the buying power of a pound fell by 94.4%.

  9. Artificial intelligence - Wikipedia

    en.wikipedia.org/wiki/Artificial_intelligence

    Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems.It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. [1]