How do you use Korean countwords with big numbers? Hi everyone, I have heard mixed accounts about counting age in Korean. If someone is 50, would they really say, "50 (쉰) 살이에요"? How would you refer to a 110 year old woman? When does one use 세/살? Similarly, how do you count large numbers with countwords? Does "저는 책 100 (백) 권 읽었어요" make sense? How would you say "There are 5000 people"? Lastly, when is the cut-off for using Sino-Korean numbers/native Korea numbers? I have heard that even numbers like 여든 and 아흔 are rarely used. Is this true? If I'm talking about 60 people attending an event, what should I say? Thank you to everyone who read all this!