| [ QuizWit ] in KIDS 글 쓴 이(By): mkjung (Fiat Pork) 날 짜 (Date): 2000년 10월 3일 화요일 오전 05시 43분 32초 제 목(Title): tree planting. you are planting 20 trees on a flat plane such that you try to maximize the number of lines on wthich 5 trees are planted. how many straight lines whre 5 trees can be planted are there ? |