Question 1151575
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There are 12 girls and 20-12 = 8 boys in the class.


Of the girls, 8 brought a lunchbox.


Of the boys, 8-6 = 2 brought a lunchbox.


In all, 8+2 = 10 children brought a lunchbox.


The probability under the problem's question is, therefore,  {{{10/20}}} = {{{1/2}}}.    <U>ANSWER</U>


The option answers list in your post is &nbsp;&nbsp;<U>I R R E L E V A N T</U> &nbsp;&nbsp;to the problem.
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