In this question, Saya and Aku were correct answers. Are Saya and Aku interchangeable or are there specific times to use one or the other?
Saya is more formal than aku.
Aku is informal but mainly Javanese and Sumatran use it. Sundanese do not use aku that way.
Formal: Saya menulis buku.
What if i use "saya" instead of "aku" hear