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# Half-full bank account

You put money in your new bank account every day. You deposit money in your bank account in such a way that the money doubles with each passing day. If you put in 1 cent the first day, 2 cents the second day, 4 cents the third day and so on, then your bank gets full on the 9th day. On which day will your bank account be half-full?
Since the money in the bank account doubles with each passing day, the bank account will be half-full the day previous to the one on which it gets full. Therefore, the bank account will be half-full on the 8th day.

## How can this be?

A certain large animal lives happily and thrives here on Earth. One day, every single one of these critters is wiped out by a mysterious disease which affects only this particular animal. There are none left anywhere on earth -- they are all gone. About a year or so...

## How old is Mike?

David and Mike are brothers. David is 33 years old today. This is three times as old as Mike was when David was the age that Mike is today.How old is Mike?Mike is 22 years old.more riddlesDonec rutrum congue leo eget...