Трое пришли вместе.

to come

Breakdown of Трое пришли вместе.

• вместе: together
• трое: three people; three (collective)

Questions & Answers about Трое пришли вместе.

Why is it трое, not три?

Трое is a collective numeral, while три is the ordinary cardinal number three.

In Russian, collective numerals like двое, трое, четверо are often used:

• for groups of people, especially when no noun is stated
• with certain plural-only nouns
• sometimes for mixed-gender groups

So Трое пришли вместе is a very natural way to say Three people came together.

If you used три, you would normally expect a noun:

• Три человека пришли вместе.

Without a noun, трое sounds much more natural here.

What exactly is трое grammatically?

Трое is a collective numeral in the nominative case.

It functions as the subject of the sentence, like three people in English.

So in:

• Трое пришли вместе

трое = three of them / three people

It does not name the people directly; it just gives the number as a group.

Is there an omitted noun after трое?