Question 1201930
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<pre>

    P(at least one) = P(one) + P(other) - P(both).


To solve the problem, we need to have the probability P(both), but it is not given in the problem.


So, I made an assumption from OUTSIDE of the problem, that these events are independent;

then P(both) = {{{(3/8)*(2/7)}}} = {{{6/56}}}.


Then the answer is  

    {{{3/8}}} + {{{2/7}}} - {{{6/56}}} = {{{21/56}}} + {{{16/56}}} - {{{6/56}}} = {{{31/56}}} = 0.5536  (rounded).
</pre>

Solved.