No. 137 in Russian
одного
"Одного" means "of one" or "one's" depending on context.
In a sentence
Я видел одного мужчину в парке.
I saw a man in the park.
The word 'одного' here is the genitive singular masculine form of 'один', used after the verb 'видел' to indicate an indefinite object.
Нам нужно найти одного друга, чтобы помочь с проектом.
We need to find a friend to help with the project.
The word 'одного' again is the genitive singular masculine form of 'один', used to specify that we are talking about one friend in a general sense.
Ты помнишь одного из них?
Do you remember one of them?
Here, 'одного' is used in the genitive singular masculine form to indicate one from a group (одного из них).
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