I have a rare set of 1960s magic magazines on Ebay right now and the auction closes later today – details here. Last week I noticed that one of the magazines has a neat puzzle in it, so it seemed appropriate to use as the basis for the Friday Puzzle….
A friend of mine has £100 in a bank account. Whenever he takes out money he records how much he has taken out and the balance. Here are his accounts for last week….
There is one small problem – the WITHDRAWN column adds up to 100, but the BALANCE column adds up to 101 – how can this be the case?
If you have not tried to solve it, have a go now. For everyone else, the answer (kinda) is after the break….
I thought I would change things around this week and so am inviting everyone to post your answer, and I will give a prize (a sign copy of one of my books) to the person who posts the most elegant and clear way of expressing the solution. Also, feel free to comment on the solutions!
I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle (UK here and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.