probability

2012-11-08 8:11 pm
http://blog.yimg.com/3/TMAhyXR7s59ewiOunE_dQQkZpl769MhyMUsABD_K6JDXa
MNLPHt52w--/36/l/OO1roHFFGYPa1mT9fIxgTA.jpg

回答 (2)

2012-11-08 9:30 pm
✔ 最佳答案

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睇下幫唔幫到你啦~~
參考: maeducation.edu.hk
2012-11-08 9:15 pm
Solf(x,y)=kxy,x=1,2,3,y=1,2,31*1+1*2+1*3+2*1+2*2+2*3+3*1+3*2+3*3=(1+2+3)*(1+2+3)=3636k=1k=1/36x+y>5x=3,y=3p=(1/36)*(3*3)=1/4


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