It is important to have a strategy in order to understand and solve problems.It is necessary to understand the greatest common divisor, least common m
문제를 풀기 위한 3가지 개념GCD/LCM (최대공약수, 최소공배수)(greatest common divisor/ least common multiple)순열/조합멱집합순열: 순서를 지키며 나열하는 것ex) 5장의 카드에서 3장을 뽑으면서 나열할 때 5p35장에서 3장