[計量] CAT test.17 27.

看板GRE (GRE入學考試)作者 (雲層退散)時間16年前 (2009/11/11 16:02), 編輯推噓0(000)
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There are 27 students on the school dabate team. What is the probability that at least 3 of them have their birthdays in the same month? A 1 B 1/2 C 1/4 D 1/9 E 0 Ans:A 實在想不太通 煩請版友幫忙了 謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.120.199.114
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