I believe the equation used on the page is wrong. It states projected winnings as 1&#x2F;2 x $2 + 1&#x2F;4 * $4 + ...  But you only have a 1&#x2F;4 chance of winning $2, since have the time you get a heads on first flip, you also get a heads on the second flip, meaning you&#x27;ll win more than $2.<p>The equation should be:
1&#x2F;4 x $2 + 1&#x2F;8 x $4 ...<p>Still goes to infinity, but at half the pace.