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This article needs additional citations for Please help Find sources: · · · · ( July 2019) ( Four fours is a minimum number of fours. The puzzle requires skill and mathematical reasoning. The first printed occurrence of the specific problem of four fours is in Mathematical Recreations and Essays. In this book it is described as a "traditional recreation". Rules There are many variations of four fours; their primary difference is which mathematical symbols are allowed. Essentially all variations at least allow 4"), the x) = ( x − 1)!), and 4 % = 0.04 Additional variants (usually no longer called "four fours") replace the set of digits ("4, 4, 4, 4") with some other set of digits, say of the birthyear of someone. For example, a variant using "1975" would require each expression to use one 1, one 9, one 7, and one 5. Solutions Here is a set of four fours solutions for the numbers 0 through 32, using typical rules. Some alternate solutions are listed here, although there are actually many more correct solutions. The entries in blue are those that use four integers 4 (rather than four digits 4) and the 0 = 4 ÷ 4 × 4 − 4 = 44 − 44 1 = 4 ÷ 4 + 4 − 4 = 44 ÷ 44 2 = 4 −(4 + 4)÷ 4 = (44 + 4)÷ 4! 3 = (4 × 4 − 4)÷ 4 = (4 + 4 + 4)÷ 4 4 = 4 + 4 ×(4 − 4) = −44 + 4!+ 4! 5 = (4 × 4 + 4)÷ 4 = (44 − 4!)÷ 4 6 = (4 + 4)÷ 4 + 4 = 4.4 + 4 ×.4 7 = 4 + 4 − 4 ÷ 4 = 44 ÷ 4 − 4 8 = 4 ÷ 4 × 4 + 4 = 4.4 −.4 + 4 9 = 4 ÷ 4 + 4 + 4 = 44 ÷ 4 −√4 10 = (4- (4 ÷ 4))!+4 (4 + 4 + 4)−√4 = (44 − 4)÷ 4 11 = (4!×√4...

Four In A Line Rules • Point the cursor over the row you wish to drop your piece in. • Left click to drop your piece • When you can connect four pieces vertically, horizontally or diagonally you win History This game is centuries old, Captain James Cook used to play it with his fellow officers on his long voyages, and so it has also been called "Captain's Mistress". Milton Bradley (now owned by Hasbro) published a version of this game called "Connect Four" in 1974. Other names for this this game are "Four-in-a-Row" and "Plot Four".

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Recent Examples on the Web The Cavs, based on their net rating, maybe should be closer to the East’s top- four instead of step back. — Chris Manning, Forbes, 22 Mar. 2023 Its balanced chassis is complemented by a punchy turbo- four that hits above its weight class, offering power delivery that feels more like a beefy V-6. — Austin Irwin, Car and Driver, 2 Mar. 2023 The big four who top the list are symbols of the change: 1. — Alan Murray, Fortune, 4 Oct. 2022 Most cotton mask companies sell their masks in India in packs of threes and fours. — Manavi Kapur, Quartz India, 26 May 2020 Angry homebuilders mailed chunks of two-by- fours to the Fed’s marble headquarters in Washington. — New York Times, 9 Dec. 2019 Then the material should be weighted down, whether with earth staples (which resemble giant hairpins), rocks or lumber, like two-by- fours. — Margaret Roach, New York Times, 24 Apr. 2020 Hold for a few seconds and place back down to all- fours position. — Mallory Creveling, Health.com, 15 Apr. 2020 After college at Indiana, Neff went into coaching and led Terre Haute South to three consecutive final fours. — Kyle Neddenriep, Indianapolis Star, 7 Apr. 2020 See More These examples are programmatically compiled from various online sources to illustrate current usage of the word 'four.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. • four -bagger • four -ball • four -eyed • four -hand • four -by -four • four -handed • four ...