我解不出來,請高手幫我想辦法!!!!!謝謝!!!!!
A group of 2N boys and 2N girls in ramdomly divided into two equally groups. What is the probablity that each group has the same number of boys and girls??
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數學高手!!!!! about probability
2007-10-01 7:57 pm
回答 (3)
2007-10-01 8:02 pm
2N boys and 2N girls =2n+2n* y=u=2n2n
2007-10-01 8:00 pm
2N boys and 2N girls =2n+2n* y=u=2n2n
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