At the start of summer, the amount of honey in the bee hive is low. However, the bees work hard and every day, the amount of honey in the hive doubles. On the 30th day of Summer, the hive is full of honey. On what day was the hive half full?

Reveal solution

If it doubles every day, the amount of honey in the hive on any given day would have been half the amount the day before. So if the hive is full of honey on the 30th day of Summer, it would have been half full on the 29th day of Summer.