以下是機會率的問題_1,可以幫我嗎﹖

2007-12-07 6:52 pm
以下是機會率的數學問題,可以幫我嗎﹖

1.The probabilities that a shop will make a profit and break even are 0.6 and 0.1 respectively. What is the probability that the shop will lose?
A、0.3
B、0.4
C、0.5
D、0.7

回答 (1)

2007-12-07 7:07 pm
✔ 最佳答案
經營一間店, 可能性只有三個, 一賺錢, 二蝕錢, 三無賺無蝕.

即係0.6+0.1+X=1
X = 0.3

A


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