On 14/05/2021 13:16, Pamela wrote:
A web site sends you 6-digit number to your phone to check your ID. Do
you memorise this by saying to yourself: 12-34-56 or 123-456?

It's a genuine question to see what number span people are using to
remember random numbers.

Usually, groups of three and four. Phone numbers I do differently,
depending on what country they're for.