"Hello" in Russian: Formal: Здравствуйте! Informal: Привет! Здарова!

I prefer to say: "Доброе утро!" = "Good morning!", "Добрый день!" = "Good afternoon!", "Добрый вечер!" = "Good evening!". These phrases are used not so often as "Здраствуйте" and that does my greetings a bit special. At least I hope so :)

"Здравствуйте" is often spoken faster with some sounds missed, so it sounds like "здрасьте", though it sounds impolite. So, better don't use "здрасьте" by yourself.

Hello ! --- Здравствуйте ! Hi ! ----- Привет ! http://news.bbc.co.uk/hi/russian/learn_english/newsid_7348000/7348628.stm

Hello formal: Здравствуйте informal: Привет (often use) Здравствуй Здорово