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How many different equations can be found?

This topic has 2 expert replies and 1 member reply

Top Member

How many different equations can be found?

Post Wed Nov 08, 2017 10:12 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    i, j, k belonging to the set S = {0,1,2,3,4} and i + j + k = 4, and how many different equations can you make of the form x ^ i + y ^ j + z ^ k

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    Top Member

    Post Thu Nov 09, 2017 5:20 pm
    nobody?

    GMAT/MBA Expert

    Post Thu Nov 09, 2017 6:45 pm
    Well, this isn't a GMAT problem ... and even if it were, it isn't well-formulated ... and even if it were, its solution involves a lot of tedious casework, so ... it's a tough sell for us. Smile

    I'm not sure where your problems are coming from, but I answered another one that wasn't well-formulated either (in another thread), so you might want to look for a better textbook/source.

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    GMAT/MBA Expert

    Post Thu Nov 09, 2017 6:49 pm
    Let me be helpful, though: this problem is basically a balls and urns problem, and you can read a lot about how to solve such problems here.

    Thanked by: mihai9
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