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Ten Digits And Operator Puzzle

  1. Aug 1, 2008 #1
    Using each of the ten digits 0 to 9 exactly once, and using only the arithmetic operators: addition(+), subtraction(-), division(/), multiplication(*) and parentheses, generate an expression that equals 975.

    Note:

    Concatenation of two or more digits is permissible, so that, expressions like:
    12*(4/3) + 56-78+9 = 3 are permissible.

    However, utilization of exponentiation(^), factorial(!), or other mathematical expressions is not allowed.

    For example, expressions like: 1834567^0 + 2! = 2 are not valid.
     
  2. jcsd
  3. Aug 1, 2008 #2
    975 + (0 * 123468)
    Of course, this is only one of a very large number of solutions.
     
    Last edited: Aug 1, 2008
  4. Aug 1, 2008 #3

    lisab

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    One solution:

    (89-76)*450/(1+2+3) = 975
     
  5. Aug 1, 2008 #4

    lisab

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    :rofl: i did all that thinkin' fer nothin' :tongue2:!
     
  6. Aug 2, 2008 #5

    neu

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    it's like countdown but twice as easy
     
  7. Aug 2, 2008 #6
    (49-10)*(72+6-3)/(8-5)
     
  8. Aug 2, 2008 #7
    how about with no zero? 123456789 only
     
  9. Aug 2, 2008 #8
    974 - 1 + 3 + 2 - 5 - 6 + 8
     
  10. Aug 2, 2008 #9
    I hate when that happens. And it happens all the time.
     
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