For the exact transliteration, it's "Ra-n-da-mu ri-n-go"

"Randamu" is written in Katakana (which is primarily used for transliterations of foreign words, so it just means "random". "Ringo", however, is written in Hiragana, which is used for regular words. "Ringo" itself translates to apple.

So yeah, basically what Daruqe said, but more complicated.