Use of a mathematical model in the English language.
It is customary to write items in a series with required articles. For example, we write 'a book, a pen, a rubber and a bag'. Mathematically speaking, the article 'a' is common to all the items. So put in a mathematical format, it would be like 'a (book, pen, rubber and bag)' and would be 'a book, pen, rubber and bag' with the removal of brackets/parentheses. (However, mathematics does not allow this.) Both expressions are acceptable.
Suppose we write 'a book, a pen, an erasure and a bag'. Here, the article 'a' cannot be taken as a common factor because there is 'an' before 'erasure'. So it would be wrong to say 'a book, pen, erasure and bag'.
It is customary to write items in a series with required articles. For example, we write 'a book, a pen, a rubber and a bag'. Mathematically speaking, the article 'a' is common to all the items. So put in a mathematical format, it would be like 'a (book, pen, rubber and bag)' and would be 'a book, pen, rubber and bag' with the removal of brackets/parentheses. (However, mathematics does not allow this.) Both expressions are acceptable.
Suppose we write 'a book, a pen, an erasure and a bag'. Here, the article 'a' cannot be taken as a common factor because there is 'an' before 'erasure'. So it would be wrong to say 'a book, pen, erasure and bag'.
by Uttam Maharjan 2 October 25, 2020
Get the English-o-metricsmug. by BON bon johnny August 6, 2009
Get the o n omug. When someone takes something of worth from you and gives you back a bag filled with little pieces of paper that read " Sorry".
I took my Bag o Sorrys to the car dealership man to buy a new car, and he said they have no value! He also said they are a currency from insane people.
by LittleLamb777 June 12, 2018
Get the Bag o Sorrysmug. a large box, most likely containing a refrigerator or washing machine at one point, occupied by 2 or more prostitutes at any given time.
"Dude, i only had to pay 5 bucks to get into that box-o-ho by the 7-11!"
"Yo momma lives in a box-o-ho!"
"Yo momma lives in a box-o-ho!"
by reallyrippedhotsexydude23 April 1, 2009
Get the box-o-homug. 
Another word for Oxygen
by Ahadi2011 August 16, 2025
Get the O₂mug. Person1: dude i have bad news
Person2: did the police caught you selling drugs?
Person1: no, my dad passed away
Person2: o...
Person2: did the police caught you selling drugs?
Person1: no, my dad passed away
Person2: o...
by AmIHuman August 1, 2020
Get the Omug.