The spelling of the word "eighty seven" may seem straightforward, but the pronunciation can trip up even native English speakers. In IPA phonetic transcription, it is spelled /ˈeɪti ˈsɛvən/. The first sound, /eɪ/, is a diphthong that combines the vowel sounds of "ay" and "ee." The "ti" in "eighty" is pronounced as /t/, not /ʃ/ as in many other words ending in "-ty". Finally, the ending of "seven" is pronounced with a schwa sound, spelled / ˈsɛvən/.
Eighty seven is a cardinal number formed by the combination of the numeral eight and the numeral seven. It is composed of two digits, the first being in the tens place and representing eight, and the second in the ones place, representing seven. In the decimal system, it is the number that succeeds eighty-six and precedes eighty-eight.
Eighty seven is an even composite number, as it can be divided by 1, 3, 9, 29, and itself. Its prime factorization is 3 x 29, indicating that it is a product of these prime numbers.
In terms of quantity, eighty-seven signifies a count or measure of 87 individual items or units. It represents a numerical value that can be applied to various contexts, such as age, quantity, or numerical classification.
The term "eighty seven" can also be used idiomatically to describe a specific number or amount in a sequence or series. It is commonly utilized in mathematical calculations, accounting, and statistics. Additionally, it can be employed in everyday conversation as a means of expressing a specific numerical value or referring to a particular order in a list or set.
The etymology of the word "eighty seven" can be broken down as follows:
1. Eighty: The word "eighty" originated from the Old English word "eahtatig", which evolved from the Proto-Germanic word "*ahtati(g)ą". This Proto-Germanic word can be further traced back to the Proto-Indo-European root "*oḱtō(w)", meaning "eight".
2. Seven: The word "seven" originated from the Old English word "seofon", which evolved from the Proto-Germanic word "*sebun". This Proto-Germanic word can be traced back to the Proto-Indo-European root "*septḿ̥", meaning "seven".
When combined, "eighty seven" simply refers to the numerical value obtained by adding 80 (eight tens) and 7.