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1.The number of...
Squares in chess
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Enemy ships in Space Invaders (original arcade game)
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55 aliens vs. 64 squares.
2.The land area of...
Great Ming (1450)
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Great Qing (1790)
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People's Republic of China (2023)
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Great Yuan (1310)
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The Qing had ~14,700,000km², Yuan had ~11,000,000km², the PRC controls 9,706,961km², the Ming had ~6,500,000km², and no, including the PRC's disputed lands changes nothing about the order.
3.The height of...
Olympus Mons
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The Earth's three tallest mountains combined
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Everest, K2 and Kangchenjunga sum to 26,046m, while Olympus Mons is roughly 21,600m.
4.The value of...
e
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ϕ
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π
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Each begins with a different integer part - the golden ratio, ϕ, begins with 1, Euler's number, e, 2, and pi, π, 3.
5.The length of...
The Nile River
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The Trans-Siberian Railway
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The TSR covers 9,289km, while the Nile only gets to 6,650km. Even adding the length of the Blue Nile isn't enough.
6.The number of...
Plank types in Minecraft (as of 1.19)
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Unique flying mobs in Minecraft (as of 1.19)
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11 planks (oak, spruce, birch, jungle, acacia, dark oak, mangrove, cherry, bamboo, crimson and warped) to 10 mobs (allay, bat, bee, blaze, Ender Dragon, ghast, parrot, phantom, vex, and Wither).
7.The population of...
Paris, Texas
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Lyons, Georgia
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Marseilles, Illinois
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Montpelier, Vermont
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Fitting, really. In order, it's Paris (24,171), Montpelier (8,074), Marseilles (4,845), Lyons (4,367).
8.Days since...
The Concorde's first flight
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Apollo 10's launch
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The Boeing 747's first flight
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Essentially which happened first of these 1969 aerospace events - 747 flew on 9th February, Concorde on 2nd March, Apollo 10 on 18th May,
9.The number of...
Distinct sections of the Brunei-Malaysia border
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Distinct sections of the Morocco-Spain border
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Distinct sections of the China-Russia border
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Distinct sections of the Azerbaijan-Iran border
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Morocco-Spain has 3 sections (Ceuta, Melilla, and Peñón de Vélez de la Gomera). The rest have 2.
10.The length of...
The Long 19th Century
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The Long 18th Century
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The Hundred Years' War
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The Shi'a Century
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The Long 18th Century lasted 127 years, the Long 19th Century lasted 125 years, the Hundred Years' War lasted 116 years, and the Shi'a Century lasted 110 years