❶ Drag a yellow circle over any number 1 through 16.
❷ Drag another yellow circle over any other number that has not been struck through with a red line.
❸ Drag another yellow circle over another number not yet struck through with a red line.
❹ This leaves one number that has not been struck through with a red line. Drag the last yellow circle over the remaining number.
❺ Add together the yellow circled numbers.
Yes! The total will always be 34!
