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,= . ANSWER The option answers list in your post is I R R E L E V A N T to the problem.