[計量] 代espana發問計量問題
由於espana同學無法po文，版主我就代替他發問，希望各位幫個囉!!
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我想要問一個跟計量有關的問題 (Manhattan GMAT CAT #3 的題目)
Bill has a small deck of 12 playing cards made up of only 2 suits
of 6 cards each. Each of the 6 cards within a suit has a different
value from 1 to 6; thus, for each value from 1 to 6, there are two
cards in the deck with that value. Bill likes to play a game in
which he shuffles the deck, turns over 4 cards, and looks for pairs
of cards that have the same value. What is the chance that Bill
finds at least one pair of cards that have the same value?
(A) 8/33
(B) 62/165
(C) 17/33
(D) 103/165
(E) 25/33
正確答案是 (C)
可是我怎麼算都是 6/11 所以就選了最靠近的答案C
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