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

Brain Teaser

Discussion in 'Just for Laughs' started by JonnyMX, Mar 10, 2007.

  1. JonnyMX

    JonnyMX Petabyte Poster

    5,239
    211
    236
    Ok, this isn't really a joke but it came up on a team build once.
    It will still confuse anyone you run it past.

    Three students decide to club together to buy a TV.

    They see one in a shop for £30.

    They buy the TV, and each of them hands over a £10 note.

    The shopkeeper tells them that it is ex-demo and so he'll knock £5 off the price.

    He hands back 5 pound coins.

    To keep things simple, each student takes £1 and they put the spare £2 into a charity tin on the counter.

    The problem is, now each of them has handed over £9 (£10 and received £1 back).

    3 x £9 is £27.

    There is £2 in the charity tin.

    £27 + £2 = £29.

    Where is the remaining £1 from the original £30 they paid?
     
    Certifications: MCT, MCTS, i-Net+, CIW CI, Prince2, MSP, MCSD
  2. Sparky
    Highly Decorated Member Award

    Sparky Zettabyte Poster Moderator

    10,189
    296
    319
    The £2 to the charity (in the last bit) is irrelevant as they all paid £9 (all in) :biggrin
     
    Certifications: MSc MCSE MCSA:M MCSA:S MCITP:EA MCTS(x5) Security+ Network+ A+
    WIP: Exchange 2007\2010
  3. Raffaz

    Raffaz Kebab Lover Gold Member

    2,976
    56
    184
    I dont know how to explain it lol. Its in with the £25 because that doesnt divide by the 3 of them, i think lol. I dont know, my head hurts now. :)
     
    Certifications: A+, MCP, MCDST, AutoCAD
    WIP: Rennovating my house
  4. nXPLOSi

    nXPLOSi Terabyte Poster

    2,874
    30
    151
    Its all lies!

    /runs off crying....
     
    Certifications: A+, Network+, Security+, MCSA 2003 (270, 290, 291), MCTS (640, 642), MCSA 2008
    WIP: MCSA 2012
  5. Stoney

    Stoney Megabyte Poster

    731
    23
    69
    The £27 is the cost of the TV AND the £2 that went in the charity tin. That last bit of the puzzle is misleading because the charity tin donation has already been included in the total cost so you shouldn't be adding it on again. 8)
     
    Certifications: 25 + 50 metre front crawl
    WIP: MCSA - Exam 70-270
  6. JonnyMX

    JonnyMX Petabyte Poster

    5,239
    211
    236
    Ssshh!

    :box2
     
    Certifications: MCT, MCTS, i-Net+, CIW CI, Prince2, MSP, MCSD
  7. hbroomhall

    hbroomhall Petabyte Poster Gold Member

    6,623
    115
    224
    This is a classic which demonstrates a typical accounting error. You are adding credits and debits, which is a no-no.

    Taking the credits: They have a TV worth £25 and the charity has £2 - total £27.

    Taking the debits: They have each spent £9 - 3 X £9 = £27.

    So it balances.

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+
  8. Headache

    Headache Gigabyte Poster

    1,092
    9
    85
    Oh yeah. Makes sense now.
     
    Certifications: CCNA
    WIP: CCNP
  9. Raffaz

    Raffaz Kebab Lover Gold Member

    2,976
    56
    184
    Always does when someone gives you the answer:)
     
    Certifications: A+, MCP, MCDST, AutoCAD
    WIP: Rennovating my house
  10. wizard

    wizard Petabyte Poster

    5,763
    35
    174
    Okay, so what's the meaning of life? :D
     
    Certifications: SIA DS Licence
    WIP: A+ 2009
  11. twizzle

    twizzle Gigabyte Poster

    1,838
    33
    104
    42!:p
     
    Certifications: Comptia A+, N+, MS 70-271, 70-272
    WIP: Being a BILB,
  12. Headache

    Headache Gigabyte Poster

    1,092
    9
    85
    Food, booze, sex and sleep.
     
    Certifications: CCNA
    WIP: CCNP

Share This Page

Loading...