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90 is the tenth and largest number to hold an Euler totient value of 24; [9] no number has a totient that is 90, which makes it the eleventh nontotient (with 50 the fifth). [10] The twelfth triangular number 78 [11] is the only number to have an aliquot sum equal to 90, aside from the square of the twenty-fourth prime, 89 2 (which is centered ...
99.3 is "ninety-nine point three"; or "ninety-nine and three tenths" (U.S., occasionally). In English the decimal point was originally printed in the center of the line (0·002), but with the advent of the typewriter it was placed at the bottom of the line, so that a single key could be used as a full stop/period and as a decimal point.
Western style emoticons are mostly written from left to right as though the head is rotated counter-clockwise 90 degrees. One will most commonly see the eyes on the left, followed by the nose (often omitted) and then the mouth. Typically, a colon is used for the eyes of a face, unless winking, in which case a semicolon is used.
Its arithmetic mean of its six divisors [3] is twenty-eight, [4] [5] where (6, 28) represent the first two perfect numbers. [6] It is the sixtieth arithmetic number, where 60 is the second unitary perfect number (the next such number is 90). For =, there are 92 solutions in the n-Queens Problem. 92 is the eighth pentagonal number. [7]
D'yan Forest is a working comedian at 90, doing gigs in two languages. She shared some of her tips for staying fit and funny into her 90s. These include having a positive outlook and spending time ...
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Just to muddy the waters a little, "up to 90 days after the event" would mean the same as "within 90 days of the event" (i.e. anytime from day 0, when the event finishes, to day 90). "90 days after the event" could mean only on day 90, or on day 90 or any later day. MChesterMC 14:03, 7 September 2015 (UTC)
The choice of "ninety-nine" is the unfortunate result of a literal translation. The test was originally described by a German physician who used the phrase "neunundneunzig" ( pronounced [ˈnɔʏnʊntˈnɔʏntsɪç] ), which he found would cause maximum vibration of the chest.