수학연구소의 연구원 MathlabJ는 자신의 이름을 재배열 하는 놀이를 생각해냈다.
놀이의 규칙은 다음과 같다.
-MathlabJ를 재배열한다
-첫문자와 마지막문자는 대문자이다.
-2개이상의 같은문자는 구별하지 않는다.
그때, 갑자기 Polymath 연구원이 들어와 자신도 같이 놀이를 하겠다고 했다.
MathlabJPolymath 를 규칙에 맞게 재배열하는 경우의 수는?
(풀이 필수, 식만써도 맞게 해드립니다. 다만 식에 대한 설명이 충분히 있어야합니다.)
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