→ ASD332:黑桃 07/06 23:46
推 celestialgod:1. 13C3/52C3 (十三張黑桃取三/總數) 07/07 00:38
→ celestialgod:2. (4C2*13C1*12C1*4C1+13C1*4C3)/52C3 07/07 00:40
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Three cards are randomly selected, without replacement,
from an ordinary deck of 52 cards.
1.What is the probability that all three cards are spades?
2.What is the probability the three cards contain one pair or
three of a kind?
我不是很懂第一個題目在問什麼? spade是什麼意思?/
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