[計量] CAT壹題
If two cards are drawn at random without replacement from a standard deck
of 52 cards that contain four different suits of 13 cards each,what is the
probability that both cards will be of a given suit?
我題目解讀的意思是
在不放回卡片的狀況下 從52張撲克牌中抽兩張出來
兩張是同個花色的機率是多少
我算出來是 4/17
但答案是 1/17
不太清楚為什麼 答案選項有1/4 3/13 13/102 1/13 1/17
是我題目會錯意了嗎......
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推
06/17 23:05, , 1F
06/17 23:05, 1F
→
06/17 23:07, , 2F
06/17 23:07, 2F
推
06/17 23:10, , 3F
06/17 23:10, 3F
→
06/17 23:11, , 4F
06/17 23:11, 4F
→
06/21 11:52, , 5F
06/21 11:52, 5F
→
06/21 11:53, , 6F
06/21 11:53, 6F
→
06/21 11:53, , 7F
06/21 11:53, 7F
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