A capitalized letter
An abbreviation is a shortened form of a word followed by a period. The word central does not have an abbreviation but a contraction, which is Ctr.
The abbreviation for number is No. (has a period at the end). Numbers plural is Nos. (again a period at the end).
In correct English, every abbreviation should have a period at the end
it is st. with a period at the end
Yes, usually there is.
No, you do not need to place an additional period after an abbreviation if the abbreviation already includes a period at the end, like "etc.". Just use one period to end the sentence.
There should be a period after Inc.
No. You put only one period.
Yes, the correct abbreviation requires a period at the end.
abbreviation
You must type all the letters and the period '.' at the end. The period shows that it is an abbreviation.
No, you do not need to add an additional period at the end of a sentence that already ends with an abbreviation like Oct. The period from the abbreviation serves as the ending punctuation for the sentence.