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vera_ewing

  • one year ago

How would you solve this?

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  1. vera_ewing
    • one year ago
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    A three-digit number, XYZ, is formed of three different non-zero digits X, Y , and Z. A new number is formed by rearranging the same three digits. What is the greatest possible difference between the two numbers? (For ex- ample, 345 could be rearranged into 435, for a difference of 435 − 345 = 90.)

  2. acxbox22
    • one year ago
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    i am not good with these type of questions..sorry

  3. vera_ewing
    • one year ago
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    @Luigi0210 How would you solve this?

  4. sdfgsdfgs
    • one year ago
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    well, 9 n 1 will be two obvious choices for XYZ....but what should the third no. be.....

  5. acxbox22
    • one year ago
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    i am thinking a number that is in the middle

  6. vera_ewing
    • one year ago
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    How did you figure that out?

  7. acxbox22
    • one year ago
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    for the third digit

  8. vera_ewing
    • one year ago
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    The middle number has to be between 2 and 8 right?

  9. acxbox22
    • one year ago
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    9 and 1 have the greatest difference

  10. sdfgsdfgs
    • one year ago
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    hahahaa it doesnt matter what the 3rd number is....

  11. acxbox22
    • one year ago
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    ya it does

  12. vera_ewing
    • one year ago
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    9_1 ?

  13. sdfgsdfgs
    • one year ago
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    9a1 and 1a9 with the difference being 792...

  14. vera_ewing
    • one year ago
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    The middle number doesn't matter actually.

  15. acxbox22
    • one year ago
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    |dw:1434485534915:dw|

  16. vera_ewing
    • one year ago
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    9 _ 1 @acxbox22

  17. vera_ewing
    • one year ago
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    We need the largest number.

  18. sdfgsdfgs
    • one year ago
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    but in order to max the difference, the pair should be 9_1 and 1_9 :)

  19. vera_ewing
    • one year ago
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    @sdfgsdfgs You're brilliant! Thank you for helping me understand! :)

  20. acxbox22
    • one year ago
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    |dw:1434485610939:dw| OR |dw:1434485639052:dw|

  21. vera_ewing
    • one year ago
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    A three-digit number, XYZ, is formed of three different non-zero digits X, Y , and Z. A new number is formed by rearranging the same three digits. What is the GREATEST POSSIBLE difference between the two numbers? (For ex- ample, 345 could be rearranged into 435, for a difference of 435 − 345 = 90.)

  22. vera_ewing
    • one year ago
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    Anyway, thank you SO much @sdfgsdfgs for helping me understand this concept! :)

  23. vera_ewing
    • one year ago
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    And @acxbox22 thank you! :)

  24. acxbox22
    • one year ago
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    ya i tried a few numbers in all 8 conditions but the first one creates the biggest difference for all numbers

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