Мы продали сотню билетов.

Продали is the past tense plural form of продать (to sell, perfective).

• про-дать = perfective verb, so it presents the sale as a completed whole
• -ли marks plural in the past tense
• because the subject is мы (we), the verb must also be plural

So мы продали means we sold / we have sold in the sense of a completed action.

Compare:

• Мы продавали билеты = We were selling tickets / used to sell tickets (imperfective, process or repeated action)
• Мы продали билеты = We sold the tickets (perfective, completed result)

Сотню is the accusative singular of сотня, a noun meaning hundred.

So this sentence literally uses the noun сотня rather than the numeral сто.

• сотня = a hundred
• сотню = accusative form, because it is part of the direct object

You could also say:

• Мы продали сто билетов.

That is also correct and very common.

The version with сотню can sound a bit more concrete, expressive, or slightly more colloquial than сто. In many contexts, both simply mean a hundred tickets.

Because this phrase is the direct object of the verb продали.

We sold what?
→ сотню билетов

Since сотня is a feminine noun, its accusative singular is сотню.

Its basic pattern is:

• nominative: сотня
• accusative: сотню

So:

• Сотня билетов = a hundred tickets as a subject or dictionary form
• Мы продали сотню билетов = We sold a hundred tickets as an object

Because after words like сто and сотня, the counted noun normally appears in the genitive plural.

So:

• сто билетов
• сотня билетов
• сотню билетов

Here, билетов is the genitive plural of билет.

This is a standard Russian counting pattern for larger quantities.

Compare:

• два билета = two tickets
• пять билетов = five tickets
• сто билетов = one hundred tickets
• сотня билетов = a hundred tickets

Even though English uses just tickets, Russian changes the noun form depending on the number expression.

Not naturally.

A very literal grammatical breakdown might tempt you to think:

• сотня билетов = a hundred of tickets

But that is not how natural English works. The correct English translation is simply:

• a hundred tickets

In Russian, the genitive after quantity words is just part of the normal grammar pattern. You should not force an of into the English unless the English expression actually needs it.

Yes, absolutely.

• Мы продали сто билетов.
• Мы продали сотню билетов.

Both are correct.

A rough comparison:

• сто билетов = more neutral, straightforward counting
• сотню билетов = often a bit more vivid, conversational, or stylistically expressive

In many real situations, the difference is small, and either one could be used.

Yes, Russian can often omit personal pronouns when they are understood from the verb form.

So both of these are possible:

• Мы продали сотню билетов.
• Продали сотню билетов.

Because продали is plural past tense, the listener already knows the subject is we or they, depending on context. Adding мы makes the subject explicit.

Including мы can do things like:

• make the sentence clearer
• add emphasis to we
• contrast we with someone else

So мы is not always strictly necessary, but it is perfectly normal.

It can correspond to either, depending on context.

Russian does not have a separate tense that works exactly like the English present perfect. The past tense of a perfective verb often covers meanings that English expresses with either:

• we sold
• we have sold

So Мы продали сотню билетов could mean:

• We sold a hundred tickets
• We have sold a hundred tickets

The surrounding context tells you which English version sounds best.

Yes. Russian word order is more flexible than English word order because case endings show the grammatical roles.

These are all possible:

• Мы продали сотню билетов.
• Сотню билетов мы продали.
• Мы сотню билетов продали.

They all keep basically the same core meaning, but the emphasis changes.

For example:

• Мы продали сотню билетов. = neutral
• Сотню билетов мы продали. = emphasizes a hundred tickets
• Мы сотню билетов продали. = can sound more conversational or contrastive in context

So the original sentence is the most neutral, but other orders are possible for focus.

The usual stress is:

• мы продАли сОтню билЕтов

Word by word:

• продАли
• сОтню
• билЕтов

Stress matters in Russian, so it is useful to learn the sentence with the correct pronunciation from the start.