WEEKLY GIVEAWAY PUZZLE (6-11-15):

Arrange the digits 1,2,3,4,5,6,7,8,9 in order from left to right, Β insert + and – as desired to get 79 Β ?

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9 Responses to “WEEKLY GIVEAWAY PUZZLE (6-11-15):”

  1. S Says:

    1+2+3+4+5+ 6+7+8+9+1+2+3+4+5+6+7-8+9+1+2-3-4-5+6+7-8+9 =79

  2. Mat Says:

    123-4+56-7-89

  3. ti89guru Says:

    Mat , well done. How long did it take you?
    I had a different solution in mind.

    If anyone can find 10 solutions, that person will also get a free app.

    And which app would you like?

  4. Mat Says:

    1-2+34+56+7-8-9 another one πŸ™‚
    It takes 5-10mins πŸ™‚
    Huh 10 solutions is possible?
    I want to test Calculus with my TI-89 Tit πŸ™‚

  5. ti89guru Says:

    Sure it is. Write a little program that finds those. Email us At support@ti89.com please.

  6. Mat Says:

    -1-2+34+56-7+8-9
    -12-34+56+78-9
    1-2+3-4+5-6-7+89
    -1+2-3-4-5-6+7+89
    -1+2+3-4-5+67+8+9
    -1+2+3+4+5+67+8-9
    +1-2+3+4+5+67-8+9
    -1+2+3+45+6+7+8+9

    I think that’s would be ok? πŸ˜€

  7. Mat Says:

    1-23+4-5+6+7+89
    -1+23-4-5+67+8-9
    -1+23+45+6+7+8-9

  8. Mat Says:

    ti89guru
    How you calculate how many possible combination are in this problem? with formul ? πŸ˜€

  9. ti89guru Says:

    Mat
    Send an email with your Calc ID under F1 ABOUT to
    support@ti89.com

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