Question 1203793
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In a certain​ country, the true probability of a baby being a Girl is 0.469. 
Among the next Nine randomly selected births in the​ country, what is the probability 
that at least one of them is a boy ?
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<pre>
The event  "at least one of them is a boy" is the complement to the event "no one of them is a boy".


Therefore, the answer to the question is

    P = {{{1 - (1-0.469)^9}}} = {{{1 - 0.531^9}}} = 0.9966  (rounded).
</pre>

Solved.