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Links Thread, For Your Mathematics Teachers: Genius Puzzles And Riddles [With Answers] in Links, Downloads and Scripts; Link: Genius Puzzles and Riddles One of the puzzles from there pages: Now is the time for you to memorize ...
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    DaveP's Avatar
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    For Your Mathematics Teachers: Genius Puzzles And Riddles [With Answers]

    Link: Genius Puzzles and Riddles

    One of the puzzles from there pages:

    Now is the time for you to memorize all the mathematical symbols you know because you will need them to solve the arrays of number we have placed below the question. You can use any amount of symbols in any order except such symbols that comprises of a number with them like cube root. Place the symbols in a manner that the equations stand valid.

    0 0 0 = 6
    1 1 1 = 6
    2 + 2 + 2 = 6
    3 3 3 = 6
    4 4 4 = 6
    5 5 5 = 6
    6 6 6 = 6
    7 7 7 = 6
    8 8 8 = 6
    9 9 9 = 6
    I was able to solve all but the first two [Thought I had answered the second one but an alternate solution is listed: No peeking!]

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    Marshall_IT's Avatar
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    Very nice!

    I don't know what ! Means though

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    Quote Originally Posted by Marshall_IT View Post
    ...I don't know what ! Means though
    ! in Mathematical terms is Factorial.

    A number Factorial is the product of that number and then each number decreasing by one until one.

    5! is 5x4x3x2x1=120 Similarly 6! is 6x5x4x3x2x1=720 and so on.

  4. Thanks to DaveP from:

    Marshall_IT (5th November 2013)

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    Marshall_IT's Avatar
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    Quote Originally Posted by DaveP View Post
    ! in Mathematical terms is Factorial.

    A number Factorial is the product of that number and then each number decreasing by one until one.

    5! is 5x4x3x2x1=120 Similarly 6! is 6x5x4x3x2x1=720 and so on.
    Thanks, I obviously didn't do enough maths at school!

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    twin--turbo's Avatar
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    and 0! is the same as 1!

    Lean something every day ( certainly don't think it featured in my GCSE )

    Rob

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    DaveP's Avatar
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    Quote Originally Posted by twin--turbo View Post
    and 0! is the same as 1!...
    This is why I couldn't solve the first two posed questions above: I had forgotten that, by definition, 0!=1.

    I can't remember the theory behind it but it made sense all those years ago. I might try to get to grips with it again.

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    Quote Originally Posted by DaveP View Post
    This is why I couldn't solve the first two posed questions above: I had forgotten that, by definition, 0!=1.

    I can't remember the theory behind it but it made sense all those years ago. I might try to get to grips with it again.
    Why lol......

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    factorials represent the number of ways in which the numbers can be arranged in the sequence.

    3! ( numbers 3,2 &1) can be arranged (1,2,3 ; 1,3,2 ; 3,2,1 ; 3,1,2 , 2,3,1 and 2,1,3 ) hence result is 6
    2! (numbers 2 & 1) can be arranged (1,2 or 2,1 ) hence result is 2
    1! (number 1) can only be arranged ( 1 ) hence result is 1
    0! ( numbers 0 ) can only be arranged as ( 0 ) hence result is 1

    Rob

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    (0 + 0 + 0!!) = 6
    (1 + 1 + 1)! = 6
    2 * 2 + 2 = 6
    3 * 3 - 3 = 6
    root (4) + root (4) + root (4) = 6
    5 + 5/5 = 6
    6 + 6 - 6 = 6
    7 - 7/7 = 6
    Cube root 8 + Cube root 8 + Cube root 8 = 6
    (9 + 9) / root (9) = 6

    Took me about 3 minutes to work out
    Last edited by featured_spectre; 6th November 2013 at 12:23 AM.

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    Quote Originally Posted by nephilim View Post
    (0 + 0 + 0!!) = 6
    (1 + 1 + 1)! = 6
    2 * 2 + 2 = 6
    3 * 3 - 3 = 6
    root (4) + root (4) + root (4) = 6
    5 + 5/5 = 6
    6 + 6 - 6 = 6
    7 - 7/7 = 6
    Cube root 8 + Cube root 8 + Cube root 8 = 6
    (9 + 9) / root (9) = 6

    Took me about 3 minutes to work out

    Could you tell me right quick what would be a better motor for my Skyline, a Gallo 12 or a Gallo 24?




    Rob

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    Aren't they pizza's? From fast and furious...forget which one, but watched it recently...2nd films perhaps?



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