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In general, if an increase of x percent is followed by a decrease of x percent, and the initial amount was p, the final amount is p (1 + 0.01 x)(1 − 0.01 x) = p (1 − (0.01 x) 2); hence the net change is an overall decrease by x percent of x percent (the square of the original percent change when expressed as a decimal number).
In some countries, the number 20 is used as an index in measuring visual acuity. 20/20 indicates normal vision at 20 feet, although it is commonly used to mean "perfect vision" in countries using the Imperial system. (The metric equivalent is 6/6.)
It was the first meeting of both Super Bowl participants during Week 1 of the following season since the 1970 season when the Minnesota Vikings and Kansas City Chiefs held a rematch of Super Bowl IV to kick off the post-merger era of the NFL. [164] The Broncos won 21–20 as Carolina's Graham Gano missed a field goal attempt to win the game. [165]
This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Colors are an important part of visual arts, fashion, interior design, and many other fields and disciplines. The following is a list of colors. A number of the color swatches below are taken from domain-specific naming schemes such as X11 or HTML4. RGB values are given for each swatch ...
71 is the 20th prime number. Because both rearrangements of its digits (17 and 71) are prime numbers, 71 is an emirp and more generally a permutable prime. [1] [2] 71 is a centered heptagonal number. [3] It is a Pillai prime, since ! + is divisible by 71, but 71 is not one more than a multiple of 9. [4]
Graph of the number of primes ending in 1, 3, 7, and 9 up to n for n < 10 000. Another example is the distribution of the last digit of prime numbers. Except for 2 and 5, all prime numbers end in 1, 3, 7, or 9. Dirichlet's theorem states that asymptotically, 25% of all primes end in each of these four digits.
After the use of unique names for the numbers 1–16, those from 17 to 69 are counted by tens, while twenty (vingt) is used as a base number in the names of numbers from 70 to 99. The French word for 80 is quatre-vingts , literally "four twenties", and the word for 75 is soixante-quinze , literally "sixty-fifteen".
Generation Z (often shortened to Gen Z), also known as Zoomers, [1] [2] [3] is the demographic cohort succeeding Millennials and preceding Generation Alpha.Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years, with the generation most frequently being defined as people born from 1997 to 2012.