A) 11/28
B) 19/28
C) 17/28
D) None of these
Correct Answer: C
Solution :
[c] Let A be the event that 1st man will be alive till 75 years and B be the event that 2nd man will be alive till 70 years then \[P(A)=5/16\] and \[P(B)=3/7\] then \[P(A')=11/16\], and \[P(B')=4/7\] Probability that none of them will be alive 35 years hence is \[P(A')xP(B')=11/19x4/7=11/28\] Then required probability is \[1-11/28=17/28\]You need to login to perform this action.
You will be redirected in
3 sec