数学题 

A company takes out an insurance policy to cover accidents that occur at its manufacturing plant. The probability that one or more accidents will occur during any given month is 3/5 . The number of accidents that occur in any given month is independent of the number of accidents that occur in all other months. Calculate the probability that there will be at least four months in which no accidents occur before the fourth month in which at least one accident occurs. (A) 0.01 (B) 0.12 (C) 0.23 (D) 0.29 (E) 0.41 ▂ ▃ ▄ ▅ ▆ ▇

no idea[s:205]

[s:205] 可惜没耐心了

唉，MATH 12全忘光了[s:198]

这不是数学题，是逻辑题，答案是0。本人逻辑专家，一定让您心服口服。您这题目本身有问题，没有正确答案供选择。