This is the 3859th most frequent Korean word.
알아냈다
"알아냈다" means "found out" or "discovered."
The word "알아냈다" is used here to mean discovering or realizing information about a mistake in the problem.
나는 그 문제가 잘못되었음을 알아냈다.
I found out that the problem was wrong.
In this sentence, "알아냈다" signifies determining or understanding the origin or reason behind an event.
그는 사고의 원인을 알아냈다.
He figured out the cause of the accident.
Here, "알아냈다" is utilized to express successfully discerning or uncovering something, such as a password.