While recent seasons have had memory tasks concerning the race (some using one racer 12, 14) some using both (11,13) but for the whole series its been 50/50 to date. So it is possible that they don't have one in this season.
Memory based tasks
Season 3, 8,9,11,12,13,14
Standard Tasks
Seasons 1,2,4,5,6,7,10.