수학동아 - 폴리매스

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함께 풀고 싶은 문제

창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.

[창의 퍼즐] 번호표

space 2020.12.10 05:02 조회 353

문제 푼 사람 1명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

스페이스네 마을에는 새로 태어난 아이에게 번호표를 붙인다

그런데 붙일 때 0, 2, 3, 4, 5, 8, 9를 사용해 7의 배수인 숫자를 순서대로 붙인다고 한다

그럼 스페이스는 번호가 24598이라고 할 때 몇 번째로 태어났나?

또 스페이스의 동생은 398204번째로 태어났다면 번호는 몇 번인가?

이전글 마리오 시리즈1

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호박고구마 Lv.7 2021.02.04 22:05 비밀댓글

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