Question

Phone numbers problem: you are in a notebook shop and you have a pen and 1 dollar bill

Answer 1

<<Although it is not advisable to do so, there is only one thing that you can do to note down the phone numbers. This is assuming that the cheapest notebook in the shop costs more than the $1 bill that you have.>>

Use the pen to write down the phone numbers on the one dollar bill that you have. Then place the bill safely in your wallet, handbag, pocket or just about anywhere that it is not likely to get lost. When you want to make a call to any of those numbers, you can look for them in that one dollar bill.