The probability that a man will be alive for 10more yrs is 3/4 & the probability that his wife will alive for 10 more yrs is 1/5. The probability that none of them will be alive for 10 more yrs, is	Choose the correct option.
A) 1/2 B) 1 C) 2/3 D) 1/5 E) 2
Sol. Required probability = Pg.) x P(B) = (1— 1/5 x(1 —I) =: x 1=1/5   Ans.(1/5)
<result>D</result>
The probability that a man will be alive for 10more yrs is 3/4 & the probability that his wife will alive for 10 more yrs is 1/5. The probability that none of them will be alive for 10 more yrs, is