Probability

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Question : 95 of 127

Marks: +1, -0

The probabilities of Mr.

X

and Mr.

Y

not living for one more year are

1 / 9

and

1 / 7

respectively. The probability of living one more year of either one or both is

$2 / 21$
$6 / 63$
$15 / 63$
$62 / 63$

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