21:29 01/4/2026 A 60-year-old math problem solved by a 31-year-old Korean.jpg 0 (0) https://naver.me/5L7Gv2V5 That’s amazing How useful was this post? Click on a star to rate it! Submit Rating Average rating 0 / 5. Vote count: 0 No votes so far! Be the first to rate this post.