Five people buy individual insurance policies. according to the research, the probability of each of these people not filing a claim for at least 5 years is 2/3.

the probability that all 5 have not filed a claim after 5 years is a: 0.132 b: 0.868 c: 1 , and the probability that exactly 3 will have filed a claim after 5 years is a: 0.016 b: 0.033 c: 0.067 .