道听实说
幼苗
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student guess that Norb's age is 24,48,30,32,36,38,41,44,47,49.Norb says "at least half of you guessed two low ,two of you are off by one and my age is a prime number." how old is Norb?
学生猜了Norb的年龄,分别是:24,48,30,32,36,38,41,44,47,49.Norb说:“你们猜的年龄中至少有一半是比我真实年龄还小的,两个猜的年龄比我的真实年龄小一岁,我的真实年龄是一位质数.请问norb 几岁?
1年前
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