You don't. Apostrophes aren't use to make words plural. The plural of person is people. (One person, two people.) You don't need the apostrophe in apostrophes either.
Use an apostrophe to signify either a contraction of two words don't = do not or to signify possession cat's tail boys' soccer ball James's son
If you're asking how the contract the two words with an apostrophe, the answer is, "they've."
Plurals don't use apostrophes, so the first one is correct.
Only use apostrophes in contractions, and to show possession
No, it's against the rules and there is no apostrophes tiles. And you can't use a blank as an apostrophes!
In possessive nouns and contractions.
to indicate possession , to short words,
The word apostrophe forms a normal plural as apostrophes.The possessive forms would be:apostrophe's (singular) - "The apostrophe's use in contractions is fairly standardized."apostrophes' (plural) - "The apostrophes' positions are wrong in some of his words."
Apostrophes are needed to form contractions (can't, don't, etc.), to show possession (the woman's dog; the Smiths' house; the neighbors' noise), to form plurals of numbers and initials (four 3's; two TV's or two TVs). Apostrophes are *not* to be used in making regular plurals, when a simple -s or -es should be added (cats, riders, the Hendersons, the Baileys, the Williamses, dogs, crackers, etc.)
apostrophes do not occur above letters in English. If you are talking about a specific language, you would need to include that in your question. Thanks. actually you can use them in names mostly if the persons name ends in "s" you would use it like this "matthews' classroom"
No, it should be "two."
Possessive nouns use apostrophe as of to show ownership. While, contractions use apostrophes to show the combination of two words by one or more letter.