Memorisation time: 5 minutes
Recall time: 15 minutes
To memorise and to recall as many random digits as possible.
Complete row: 40
One error in row: 20
Two errors in row: 0
Blank row: 0
Last row (all correct): Number of the digits
Last row (one error): Number of digits divided by 2
Last row (two errors): 0
The best scores from the two attempts counts.