[Hidden-tech] Finding password to Apple ID

[Alan Frank]

For ridiculous and obscure reasons,* I need to confirm the password that 
goes with my Apple ID.  I know the ID and am pretty sure the password is 
one of a few possibilities, but need to determine which one by entering 
it when prompted.  I have an iPhone 7.  I was told that if I try to get 
an app from the App Store, I would be prompted for my password, but this 
did not happen when I tried a couple of random apps.  Maybe because they 
were free?  I don't see prices on anything.  I'm fine about spending a 
token amount, if necessary, but hopefully there is a more 
straightforward solution.

Thanks,

Alan

* My wife needs to get her iPhone wiped before transferring it.  The 
tech went to do this and was, surprisingly, prompted to enter the 
password for my Apple ID.  We were expecting that it would prompt for 
hers.  So I need to figure it out so she can provide it to the tech.