Anonymous wrote:
Anonymous wrote:Credit card numbers: Amex always starts with 3, Visa 4, Mastercard 5.
Why do people need to know that?
There are plenty of instances where I’ve had to give my number over the phone, and someone asks me what kind of card it is. If they knew this, they wouldn’t have to ask. So perhaps not relevant to you, but it takes up zero brain space for me, and once someone told me, I’ve never forgotten it.
Kind of like knowing that all cars have a little arrow on the gas gauge telling you which side the tank is on. Tiny detail that’s handy when you have a rental.