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수학동아 - 폴리매스
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함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 핵폭탄
K→C≡N 2020.03.08 20:20 조회 396
문제 푼 사람 0명
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

<기자님들께> 앞으로 제 문제는 수학동아에 절대 올리지 말아주세요!

 

핵폭탄을 하나 만들떄마다 인류의 반이 죽는다.

그러나 인류는 끊임없이 핵폭탄을 만들고,

핵폭탄 하나 만드는데에 60억/사람수 년이 걸린다.

매년 12월 31일, 신생아가 사람수/4명 생긴다.(단, 소수점은 버림.)

2000년 1월 1일 시작했고, 당시 사람 수는 60억이었다.

언제 사람이 1명만 남을까?

이 문제 어떠셨나요?

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