[math-fun] An infinite number of mathematicians walk into a bar

An infinite number of mathematicians walk into a bar. First mathematician goes up to the bartender and orders a pint. Second mathematician orders half a pint. Third mathematician orders a quarter pint. Fourth mathematician orders an eighth pint. Fifth mathematician orders a sixteenth pint. Bartender says, "stop right there, here are two pints.  The problem with you mathematicians is you need to know your limits." Brent