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The number 40 is spelled forty despite the fact that four contains a u. Even though it is often misspelled fourty, the only widely accepted spelling of the number is forty.
Mathematics. Forty is the fourth octagonal number. [3] As the sum of the first four pentagonal numbers: , it is also the fourth pentagonal pyramidal number. [4] Forty is a repdigit in ternary, and a Harshad number in decimal. [5] 40 is an abundant number, because the sum of its proper divisors is greater than 40.
Jun 21, 2023 · The correct spelling of the number 40 is forty. In modern times, fourty is incorrect, although in the past this was likely the original spelling. Nowadays, forty is the accepted spelling and fourty is considered a mistake.
May 23, 2023 · The correct spelling of 40 is “forty,” so use it in all contexts when referring to the number 40. While the latter is an alternate spelling, dictionaries and style guides agree that “forty” is the only correct way to spell 40.
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Nov 18, 2022 · Forty (40) is a cardinal number (i.e., a number used to indicate quantity). Like other words for numbers, it can be grammatically classified as a determiner, adjective, noun, or pronoun. “Fourty” is sometimes used instead of forty, but this is incorrect.
Oct 28, 2015 · Science, religion, and literature all agree—you can always count on 40. 1. Forty is the only number in English whose letters appear in alphabetical order. 2. Minus 40 degrees, or “40 below ...
40 (forty) is the number that is after thirty-nine and before forty-one. The prime factors of forty are 2 and 5. (2 * 2 * 2 * 5 = 40) Forty is also the only number in the English language which is spelt in alphabetical order. The Bible. In the Judeo-Christian Bible, the number forty has special meaning.
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Whether you call it 40 or XL, you're talking about forty: the number between thirty-nine and forty-one. If you’ve ever seen the Roman numeral XL, that means forty, since X equals ten, L equals 50 and if you put the X before the L it means L minus X or 50 minus 10 — which is 40.
