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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.
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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.
93 is: the 28th distinct semiprime [1] and the 9th of the form (3.q) where q is a higher prime. [2]the first number in the 3rd triplet of consecutive semiprimes, 93, 94, 95.
The 90-day extension is solely for the money that is due. Those delayed payments are now due July 15. However, taxpayers who are facing difficulty filing on time always still have the option to ...
99 is: . a composite number; a square-prime, of the form (p 2, q).It is the 11th composite number of this form and the third of the form (3 2, q).It has an aliquot sum of 57, within an aliquot sequence of two composite numbers (99,57,23,1,0), to the Prime in the 23-aliquot tree.
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)