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Function: driver
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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
나도 수학쌤 문장제 문제를 변형해 문제를 내는 곳입니다.
원파
2021.04.05 21:21
조회 518
어떤 자연수 N의 '자식'은 다음과 같이 정의된다;
1. N의 모든 자릿수를 서로 곱한다.
2. 1의 값이 0 혹은 한 자리 자연수라면 멈춘다.
3. 그렇지 않다면 1의 값을 이용하여 1을 재시행한다.
자식이 한 자리 자연수라면 N은 '자식을 가진다'고 하고,
자식이 0이라면 N은 '자식을 가지지 않는다'고 한다.
예를 들어 465는 자식을 갖지 않고, 14는 4를 자식으로 가진다.
각 자리 숫자들이 모두 다른 자연수 M을 생각하자.
홀수를 자식으로 가지는 가장 큰 자연수 M은 M' 이라고 한다.
M' 의 자식을 p, M' 의 자릿수의 합을 q 라고 할 때 p+q 의 값은?
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1의 값이 0 혹은 한 자리 자연수라면 멈춘다가 무슨 뜻이에요?
-
원파
Lv.9
2021.04.05 21:35
좋아요0
-
아 원래는 계속 따라가려 했는데 문제가.......
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문제 읽을때마다 자꾸 짜식 짜식 되네요 ㅋㅋㅋㅋ
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JM
Lv.6
2021.06.20 16:14
비밀댓글
비밀 댓글이 등록 되었습니다.
-
원파
Lv.9
2021.06.22 08:11
비밀댓글
비밀 댓글이 등록 되었습니다!
-
JM
Lv.6
2021.06.22 15:29
비밀댓글
확인요청중
비밀 댓글이 등록 되었습니다.
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