1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

A very simple but confusing puzzle.

Discussion in 'BlackHat Lounge' started by Titans, Mar 4, 2015.

Thread Status:
Not open for further replies.
  1. Titans

    Titans Jr. VIP Jr. VIP

    Joined:
    Oct 20, 2013
    Messages:
    2,413
    Likes Received:
    603
    Gender:
    Male
    Occupation:
    SEO
    Location:
    My Home
    Home Page:
    A man buys goods worth 200rs from a shop. (shopkeeper is selling the goods with zero profit). The Man gives him 1000rs note. The shopkeeper gets the change from the next shop and keeps 200rs for himself and returns 800rs to the man. Later the shopkeeper of the next shop comes with the 1000rs note saying "Duplicate" and takes his money back. "how much loss did the shopkeeper face ?"

    A. 200rs
    B. 800rs
    C. 1200rs
    D. 1800rs
    E. 2000rs
    F. 1600rs
    G. 1000rs
     
  2. Trepanated

    Trepanated Supreme Member

    Joined:
    Sep 18, 2010
    Messages:
    1,395
    Likes Received:
    5,384
    He's lost 1000rs.

    800rs change he handed back to the buyer, plus the 200rs he paid for the goods in the first place.
     
    • Thanks Thanks x 4
  3. internetlol

    internetlol Regular Member

    Joined:
    Feb 11, 2013
    Messages:
    266
    Likes Received:
    49
    Location:
    Houston, tx
    This is impossible to answer because there's no mention if the man gave back the 200. Assuming he didn't though the answer would be 200.
     
  4. qrazy

    qrazy Senior Member

    Joined:
    Mar 19, 2012
    Messages:
    1,115
    Likes Received:
    1,725
    Location:
    Banana Republic
    1200. 1000 which he owes to the next shop guy + 200 for the goods.
     
    • Thanks Thanks x 1
    Last edited: Mar 4, 2015
  5. djarum76black

    djarum76black Junior Member

    Joined:
    Nov 3, 2011
    Messages:
    199
    Likes Received:
    44
    Occupation:
    kuli bangunan
    Location:
    small village
    Home Page:
    D. 1800rs (800 for gave back to buyer + 1000 to change the duplicate)

    damn its take me +5mnts to think :D
     
    Last edited: Mar 4, 2015
  6. Conor

    Conor Elite Member

    Joined:
    Nov 7, 2012
    Messages:
    3,579
    Likes Received:
    5,965
    Gender:
    Male
    Location:
    South Africa
    Home Page:
    Tree fiddy?
     
    • Thanks Thanks x 1
  7. Trepanated

    Trepanated Supreme Member

    Joined:
    Sep 18, 2010
    Messages:
    1,395
    Likes Received:
    5,384
    The 1000rs he gave back to the other shopkeeper was the 1000rs he took from him in the first place - those two transactions cancel each other out.

    He has only lost what the customer walked out of the shop with - which was 200rs of goods plus the 800rs change.
     
  8. starvinmarvin14

    starvinmarvin14 Regular Member

    Joined:
    Jan 8, 2012
    Messages:
    432
    Likes Received:
    311
    Location:
    Canada
    Home Page:
    1800

    -he lost 1000 from the buyer alone (800 change plus 200 for the item)
    -he lost 800 from the other shop because he needed to pay them back 1000 but he still has 200 which is real.

    Nevermind, it's 1000.
     
    Last edited: Mar 4, 2015
  9. SuperAffiliate

    SuperAffiliate Jr. VIP Jr. VIP

    Joined:
    Aug 3, 2013
    Messages:
    363
    Likes Received:
    390
    its Rs 1200 :p indeed
     
    Last edited: Mar 4, 2015
  10. SuperAffiliate

    SuperAffiliate Jr. VIP Jr. VIP

    Joined:
    Aug 3, 2013
    Messages:
    363
    Likes Received:
    390
    isn't the Rs800 he lost from the buyer alone the same Rs800 he paid back to the other shop?
     
  11. starvinmarvin14

    starvinmarvin14 Regular Member

    Joined:
    Jan 8, 2012
    Messages:
    432
    Likes Received:
    311
    Location:
    Canada
    Home Page:
    Nevermind, I've confused myself now.
     
    Last edited: Mar 4, 2015
  12. wizard04

    wizard04 Elite Member

    Joined:
    Apr 1, 2014
    Messages:
    2,698
    Likes Received:
    2,540
    Location:
    Outside your house
    1800
    Its even not a puzzle its like puzzle for kinds in 2 grade math.
     
  13. veboo

    veboo Jr. VIP Jr. VIP

    Joined:
    Aug 22, 2014
    Messages:
    1,156
    Likes Received:
    701
    He lost 1800 :)
     
  14. veboo

    veboo Jr. VIP Jr. VIP

    Joined:
    Aug 22, 2014
    Messages:
    1,156
    Likes Received:
    701
    The buyer has gone with 800 Rs :D :D And yet shop keeper has to pay the other shopowner 1000 so it's 1800 in total. Is not that?
     
  15. Trepanated

    Trepanated Supreme Member

    Joined:
    Sep 18, 2010
    Messages:
    1,395
    Likes Received:
    5,384
    No.

    The 1000rs he gave back to the other shopkeeper is the same 1000rs he took from him in the first place.

    You don't even need to bother thinking about that - they cancel each other out. Ignore it.

    The only thing you need to think about is what the shopper walked out of the shop with - which was 800rs change and 200rs worth of goods.

    1000rs.
     
    • Thanks Thanks x 1
  16. LostConnection

    LostConnection Senior Member

    Joined:
    Jul 20, 2014
    Messages:
    1,177
    Likes Received:
    1,364
    Location:
    Grinding away in the night
    Indeed, correct, since you can only lose the 1000rs once and that is when you accept the fake money.

    Or then he lost nothing, if he can pass the fake note as real somewhere else.

    But OP, isn't this a bit lazy? This question has been all over the internet a year or two ago, and with a quick Googling I found it in the exact same form, and even titled as "Very simple but confusing puzzle", so a straight up copy-paste job.
     
  17. wizard04

    wizard04 Elite Member

    Joined:
    Apr 1, 2014
    Messages:
    2,698
    Likes Received:
    2,540
    Location:
    Outside your house
    By mistake I entered 1000 I quickly fix it. Sometimes i'm typing one thing and thinking of something completely different.
     
  18. SuperAffiliate

    SuperAffiliate Jr. VIP Jr. VIP

    Joined:
    Aug 3, 2013
    Messages:
    363
    Likes Received:
    390
    confusing myself dammit
     
    Last edited: Mar 4, 2015
  19. neverquitting

    neverquitting Regular Member

    Joined:
    Nov 10, 2014
    Messages:
    410
    Likes Received:
    327
    Location:
    United States
    Home Page:
    Sigh, if you're having trouble with a problem, reframe the question to help you make sense of it.

    The entire system is 3 people, so money/value cannot be created or destroyed. We started with a buyer who had a fake bill (worth $0), seller #1 who had goods (worth $200), and seller #2 who had cash (worth $1000). After all the transactions, the buyer has the goods (worth $200) plus $800 in change, seller #1 has cash (worth $200), and seller #2 has a fake bill (worth $0). Seller #2 is demanding his $1000 back from seller #1. Seller #1 has the leftover $200, plus $800 he will have to pay out of pocket. Cash-wise, he is now -$800. But he also lost the value of his goods ($200), so in total he is out $1000. This makes sense since the scammer got the full $1000 value for his fake bill, seller #2 has no net change, so seller #1 must've lost $1000. The end.
     
    • Thanks Thanks x 3
  20. SuperAffiliate

    SuperAffiliate Jr. VIP Jr. VIP

    Joined:
    Aug 3, 2013
    Messages:
    363
    Likes Received:
    390
    nevermind lol :p
     
    Last edited: Mar 4, 2015
Thread Status:
Not open for further replies.