Question 1142269
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<pre>
The probability that a plain pencil from the first box is selected is  {{{4/(4+4)}}} = {{{4/8}}} = {{{1/2}}}.


The probability that a color pencil from the second box is selected is  {{{7/(7+5)}}} = {{{7/12}}}.


These two events are independent (OBVIOUSLY);  therefore, the final probability under the question

is the product of these partial probabilities



    P(that a plan pencil from the first box and a color pencil from the second box are selected) = {{{(1/2)*(7/12)}}} = {{{7/24}}}.    <U>ANSWER</U>
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Solved.