수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] 이런거는 괜찮나??

sicma 2020.03.27 10:33 조회 424

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

64→8^2→8+2=10→2×5→2+5→7 72→3^2×2^3→3+2+2+3=10→2×5→2+5→7 이 수들을 보면 모두 소수로 끝나는 규칙을 볼수 있다. 예외적으로 4는 소수가 아닌 합성수이고 1은 1로 끝나는 경우가 있다. 그렇다면 4와 1로 끝나는 것 이외엔 모두 소수로 끝날까?

이전글 원원원111\\\

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