Example 3-47. It is 8 : 5 against the wife who is 40 years old living till she is 70 and 4:3 against her husband now 50 living till he is 80. Find the probability that (i) Both will be alive, (ii)...

Extracted text: Example 3-47. It is 8 : 5 against the wife who is 40 years old living till she is 70 and 4:3 against her husband now 50 living till he is 80. Find the probability that (i) Both will be alive, (ii) None will be alive, (üi) Only wife will be alive, (iv) Only husband will be alive, (v) Only one will be alive, (vi) At least one will be alive, 30 years hence.