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experimentX Group Title

What's this supposed to mean We shall say that an n-digit number is pandigital if it makes use of all the digits 1 to n exactly once; for example, the 5-digit number, 15234, is 1 through 5 pandigital. The product 7254 is unusual, as the identity, 39x186 = 7254, containing multiplicand, multiplier, and product is 1 through 9 pandigital. Find the sum of all products whose multiplicand/multiplier/product identity can be written as a 1 through 9 pandigital. HINT: Some products can be obtained in more than one way so be sure to only include it once in your sum.

  • one year ago
  • one year ago

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  1. experimentX Group Title
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    the list seems to be 12 483 5796 18 297 5346 42 138 5796 27 198 5346 28 157 4396 39 186 7254 48 159 7632 2 1793 3586 2 4178 8356 2 4358 8716 2 3459 6918 2 3479 6958 2 4659 9318 2 4569 9138 2 4769 9538 2 4679 9358 3 1942 5826 3 2615 7845 3 1625 4875 3 2915 8745 3 2618 7854 3 2918 8754 3 1928 5784 3 1594 4782 4 1732 6928 4 1593 6372 4 1963 7852 4 1738 6952 4 1958 7832 4 2379 9516 6 1432 8592 6 1572 9432 6 1573 9438 7 1235 8645 7 1364 9548

    • one year ago
  2. experimentX Group Title
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    the sum of unique product seems to be 247882

    • one year ago
  3. experimentX Group Title
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    am i missing something?

    • one year ago
  4. cwrw238 Group Title
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    well there are no examples where multiplier is 8 or 9

    • one year ago
  5. experimentX Group Title
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    I tried all ... couldn't find one.

    • one year ago
  6. experimentX Group Title
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    What's this supposed to mean "Find the sum of all products whose multiplicand/multiplier/product identity can be written as a 1 through 9 pandigita"

    • one year ago
  7. azka.niazi Group Title
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    was the list already provided?

    • one year ago
  8. sauravshakya Group Title
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    I think it means to add 5796+5346+5796+...

    • one year ago
  9. sauravshakya Group Title
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    And I dont think all the listed numbers are correct

    • one year ago
  10. experimentX Group Title
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    the list was not provided. I wrote a program to compute the list.

    • one year ago
  11. experimentX Group Title
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    i added up unique values 5796+5346+5796+... = 247882

    • one year ago
  12. experimentX Group Title
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    http://projecteuler.net/problem=32

    • one year ago
  13. azka.niazi Group Title
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    if the list was already provided, then all you need to you to need first find those number whose multiplicand/multiplier/product identity can be written as a 1 through 9 pandigita. For example 12*483=5796 is a 1 through 9 pandigita (because you can find all digit 1 to 9 in that). But another entry in the list 2*1793=3586 is not a 1 through 9 pandigita (there is no 4). So filter out the 1 through 9 pandigita first. And then sum them up.

    • one year ago
  14. azka.niazi Group Title
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    oh i see. but the list isn't correct. there are entries which can't be called a 1 through 9 pandigita - i think!

    • one year ago
  15. experimentX Group Title
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    *pandigital looks like it i didn't check it manually.

    • one year ago
  16. experimentX Group Title
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    looks like in need to edit my program.

    • one year ago
  17. azka.niazi Group Title
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    oh right! "pandigital"...i copied the word! =)

    • one year ago
  18. azka.niazi Group Title
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    yes, you do!

    • one year ago
  19. experimentX Group Title
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    this looks final 12 483 5796 18 297 5346 42 138 5796 27 198 5346 28 157 4396 39 186 7254 48 159 7632 4 1963 7852 4 1738 6952 -------------------------- sum = 45228

    • one year ago
  20. experimentX Group Title
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    Bingo!! help each other's with medals!!

    • one year ago
  21. azka.niazi Group Title
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    lol! finally!! yeah, that seems right!

    • one year ago
  22. sauravshakya Group Title
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    @experimentX u use which programming language to write progrmas

    • one year ago
  23. experimentX Group Title
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    nowdays i'm using matlab + mathematica ... I'm planning to learn python. besides that i know bunch of other languges.

    • one year ago
  24. experimentX Group Title
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    better learn python ... it's serves multipurpose.

    • one year ago
  25. sauravshakya Group Title
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    Oh ya......... I have seen my friends writting program using python.... That looks good.

    • one year ago
  26. experimentX Group Title
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    once you learn one language ... rest of language have similar structure.

    • one year ago
  27. sauravshakya Group Title
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    Well i know as u know Q-basic that we learn at school...... and can also use Visual Basic....... But python looks very different.

    • one year ago
  28. experimentX Group Title
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    once you get your hands on it ... probably programming python is lot faster than those in Basic or VB

    • one year ago
  29. sauravshakya Group Title
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    Well thanx I will try it.

    • one year ago
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