Question 13
The top set of six numbers relates to the set below it, and the two pairs of sets have the same relationship. Left: top 6, 7, 5, 2, 4, 8 and below 5, 8, 6, 1, 3, 7. Right: top 15, 9, 16, 10, 11, 3 and below ?, ?, ?, ?, ?, ?. Which set replaces the question marks?