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#1 計Probability
我Statistics 計probability 唔係好掂, :ss:
煩請高手指教 :bk:

[u][size=2]Question[/size][/u]

[size=2]4 cards are drawn from an ordinary deck of 52 cards [b]with replacement[/b]. Find the probability of:

(a) Getting exactly 1 spade and 3 clubs;

(b) The 4 cards are of the same suit.

Correct answers to 4 decimal places.[/size]

[u]Translated into Chinese:[/u]

4張啤牌在52張抽出, 每次抽出的1張都會放回52張啤牌當中
找出以下機率:

(a) 完全地抽出1張黑桃及3張梅花;

(b) 4張啤 ..

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