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Question

the odds are 11:5 against a man ,who is 38 years old,living till he is 73 and 5:3 against another man ,who is now 43 years old living till he is 78.

what is the probability that both will alive 35 years hence?

a)$\frac{55}{128}$

b)$\frac{11}{16}$

c)$\frac{5}{16}$

d)$\frac{15}{128}$

Comments

d?

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correct!

explain @ank73811

Answer 1

E1 = prob. that person 1 is alive 35 years hence = 5/16

E2 = prob. that person 2 is alive 35 years hence = 3/8

P(E1 and E2) = prob. that both person is alive 35 years hence = P(E1) * P(E2) = 5/16 * 3/8 = 15/128

Comments

ok,thanks got it!