November 4, 2011

How many people are there?


How many people must be there if all but 2 are named Smith, all but 2 are named Jones, and all but 2 are named Wilson?

23 comments:

  1. André MenesesNovember 4, 2011 at 7:38 PM

    2...

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  2. ivanatoraNovember 4, 2011 at 10:06 PM

    3 - one Smith, one Jones and one Wilson.

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  3. RajeshNovember 5, 2011 at 5:50 PM

    3

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  4. RonNovember 5, 2011 at 8:08 PM

    3

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  5. InvincibleApurvaNovember 17, 2011 at 10:41 PM

    3 :P

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  6. AnonymousNovember 24, 2011 at 6:49 PM

    3

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  7. Jyotirmoy ChakrabortyDecember 9, 2011 at 6:28 PM

    3

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  8. AnonymousDecember 10, 2011 at 9:58 AM

    total 6. 2 smith, 2 jones and 2 wilson

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  9. AnonymousDecember 11, 2011 at 8:22 AM

    only 2 ..none of them is smith,jones or wilson

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  10. shaeDecember 20, 2011 at 9:44 AM

    Must be 3

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  11. AnonymousJanuary 2, 2012 at 3:36 AM

    6? or 2?

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  12. dileep_ratnaJanuary 16, 2012 at 1:00 AM

    3 quite easy one

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  13. antiderivative calculatorFebruary 6, 2012 at 5:44 PM

    Its 3 smith, jones and Wilson

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  14. AnonymousMay 21, 2012 at 6:29 PM

    how it will be 3

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  15. AnonymousJune 30, 2012 at 6:46 PM

    A minimum of 3

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  16. Midgley's Photography/HSMPSJuly 14, 2012 at 3:31 AM

    3??

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  17. Midgley's Photography/HSMPSJuly 14, 2012 at 3:31 AM

    3??

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  18. AnonymousAugust 7, 2012 at 6:10 PM

    3

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  19. UnknownSeptember 1, 2012 at 10:51 PM

    explain pls

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  20. Philip's RamblingsOctober 10, 2012 at 1:31 AM

    There's 1 Smith, and two others - Jones & Wilson (all but two are Smith).
    There's 1 Jones, and two others - Smith & Wilson (all but two are Jones).
    There's 1 Wilson, and two others - Smith & Jones (all but two are Wilson).

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  21. Anthony EwingOctober 24, 2012 at 9:07 PM

    Its 3 smith, jones and Wilson

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  22. AnonymousJanuary 21, 2013 at 6:52 AM

    It's 3. The mathematical way to find this out would be:
    Equation: P= s+j+w
    Key: P= # of people s= # of people named smith j= # of people named Jones w= # of people named wilson
    So... is all but 2 are named Smith then s= P-2, if all but 2 are named jones then j= P-2, if all but 2 are named wilson then w= P-2

    P then eqauls: P= (P-2) + (P-2) + (P-2)
    P= 3P-6
    -2P= -6
    P= 3

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  23. AnonymousNovember 12, 2014 at 2:45 PM

    The correct answer is 2 or 3? Can it be 2 considering that none of them is named smith or Jones or Wilson?

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