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10*9*8*7*6*5*4*3*2*1 = 10! Can this be true?! Why or why not?

Apparently this is true i dont see any way.plz help with explanation.thanx in advance

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  • 8 years ago
    Favorite Answer

    whenever an exclamation point is used in math, it means factorial. Factorial means the exclamation point's coefficient (in this case, it's 10) multiplied by all number going down from the coefficient (10) to one. So, yes, this is correct.

    10!= 10*9*8*7*6*5*4*3*2*1

    Just the same as this..

    9!= 9*8*7*6*5*4*3*2*1

    Any number with an exclamation point after it means that number multiplied by all going down, I know I said this twice but im saying it again just to get the point across.

    So......

    5! = 5*4*3*2*1

    4! = 4*3*2*1

    3! = 3*2*1

    Hope I helped :-)

    Source(s): my mind
  • Ray
    Lv 7
    8 years ago

    True. 10!= 3628800 = 10*9*8...*1

  • 8 years ago

    Yes, that is the definition of a factorial: x! = x(x-1)(x-2)(x-3) .... 3*2*1

  • 8 years ago

    It is true. Because by defination n! is 1*2*3*4...*n

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  • 8 years ago

    without multiplying this problem all the way out, I can see that 10*9 already = 90 and as far as I've been taught, 90 is more that 10--so the answer of 10 is false.

  • Anonymous
    8 years ago

    That's not true ! That's called Factorial

    And Factorial 10 is 3628800

    Source(s): en.m.wikipedia.org/wiki/Factorial
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