If the probability that A will live 15 yr is 7/8 and that B will live – McqOptions

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1.	If the probability that A will live 15 yr is 7/8 and that B will live 15 yr is 9/10, then what is the probability that both will live after 15 yr ?
A.	1/20
B.	63/80
C.	1/5
D.	None of these
Answer» C. 1/5

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