DIRECTIONS:For the question displayed, check ALL CHECKBOXES that apply.  Then press the [b][color=#bf9000]CHECK ANSWER[/color][/b] button.  [br][br]When you're ready to check your answer, press [b][color=#bf9000]CHECK ANSWER[/color][/b]. [br]If you answer this question correctly, you'll see a big [b][color=#ff00ff][i]CORRECT! [/i][/color][/b]sign appear.  [br]You can change the answer when you are wrong for think once more. Try to fix your response by checking and/or unchecking necessary checkboxes. If you answer this question correctly now, you'll see a big [b][color=#ff00ff][i]CORRECT! [/i][/color][/b]sign appear, but the score will not changes.[br][br]Select [color=#38761d][b]NEW PROBLEM[/b][/color] to create a new problem. [br][br]Only is possible do 5 problems.[br][br]