Mathematics
Senior High
求解，謝謝。答案為36
說列4 有9位科學家共同保管一份重要秘密研究計劃書在安全櫃中,
若干人保有一鎖
規定達8人在場才可打開取閱,因此每若干人共配一鎖,
如何才能達此要求?
(C)
8088
(0)
【解】:
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