Hello, again!(adsbygoogle = window.adsbygoogle || []).push({});

I got one very interesting question.

We got three archers, and the probability of the ones to hit the target is:

A_{1}, A_{2}, A_{3}.

What if the task is to find the probability that the target will be hitat leastfrom one archer.

Soat leastone archer to hit the target.

Is it P(A_{1}U A_{2}U A_{3}) = A_{1}+ A_{2}+A_{3}?

Or [tex](1- P(\bar{A_{1}} \cap \bar{A_{2}} \cap \bar{A_{3}})) = 1 - \bar{A_{1}}* \bar{A_{2}} * \bar{A_{3}}[/tex], where [tex]\bar{A}[/tex] is opposite of A?

Or maybe, both are valid?

Thanks in advance.

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# Interesting thing about archers hitting the target

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