The document presents a numeric puzzle where numbers are encoded using a given code. The code is 1=6, 2=3, 3=4, 4=5, 5=6, 6=8, 7=9, 8=1, 9=2. Participants are asked to encode the number 43795 using this code. The document notes that human memory is limited to remembering around 7 random pieces of information. It then asks participants to encode the number 43795 again to demonstrate this limitation.