I got this problem from http://mathforum.org/dr.math/faq/faq.doubling.pennies.html . It's a fantastic internet resource for math teachers or anyone interested in mathematics although you might need a password to access some of it. I am adjusting the problem just a bit, so if you go online it will be slightly different.
Which is more: being given ten million dollars, or one penny the first day, double that penny the next day, then double the previous day's pennies and so on for a month?
The solution will be in the comments if/when you're interested.
