Question 329484
10 survive = {{{1(0.9)^10(0.1)^0=0.3487}}}
9 survive ={{{10(0.9)^9(0.1)^1=0.3874}}}
8 survive ={{{45(0.9)^8(0.1)^2=0.1937}}}
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P(at least 8)={{{P(8)+P(9)+P(10)=0.9298}}}