Chaordic Puzzle #9

Let's assume there are approximately 6,000,000,000 (6 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person’s left-hand? (For the purpose of this exercise, thumbs count as fingers, so five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.


Solution: the theoretical answer here would be 5^6.000.000.000 (an enormous figure). However, on 6 billion people we have to assume that there will be at least one person with no fingers on his/her left hand, and any multiplication with zero equals zero.