#Numbers also have a cultural context.
I realized that the other day, an older relative asked me to withdraw some cash for her.
Whilst handing me the card, she said: "I'll write you down the code, because it is so hard to remember."
"What is it?"
"69 42"
"I don't need the paper"
--
Note: A few days later, she changed it to something, she could remember more easily.
@mina 1st 2 digits is year of moon landing. 2nd is the answer to all questions from a computer of the book hitch hikers guide (Adams). Very easy to remember.