Heres a weird real world riddle that I just encountered. Can you explain the answer? I went into a store with $30 and gambled it all on a lotto ticket. I won $50 on the ticket, and was handed the money. So far, Id profited $20 from my starting point of $30 and held $50 in my hands. Being a daring fellow, I decided to gamble again. This time I bought a $20 lottery ticket. I now held $30 in my hands, just like at the start. But I won $30 on the second ticket. So, I now held $60 in my hands, having profited $30 from my starting point of $30. Finally, I decided to press my luck, and bought a third ticket for $10. I lost, and now held $50 dollars total in my hands. So now, from my $30 starting point, I had only profited $20 at the end of the day, and I left the store with $50. But can this be right? If I gambled $60 total from my starting point of $30 (30 +20 + 10 = 60, the price of the three tickets), and I ended up winning $70 from the combined value of the tickets (50 + 30 = 80, 80 – 10 = 70), isn’t this only a profit of $10 total ($70 won from the total real world value of the tickets, minus $60 gambled on them = 10)? So from my starting point of $30, why did I leave the store with $50 in my hands instead of $40? In other words, $10 is the final profit that I would expect when all I risked (30 + 20 + 10 = $60) is compared to all I gained from the three tickets (50 + 30 – 10 =$ 70). I started off with 30 dollars. Why didn’t I leave the store with the amount I started off with ($30), plus my profit ($10)? Where did the extra $10 come from?
Posted on: Mon, 21 Jul 2014 21:48:52 +0000
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