子や孫の東大入試数学で出る問題 ［数学a] 組合せ 二項係数 C 整数の性質(約数、倍数)
Synopsis
2047 C m は決して偶数とならないことを証明せよ。Once in a blue moon. 約30年後、出題される(かも知れない)。【標準】 ...
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