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 2 years ago
What's this supposed to mean
We shall say that an ndigit number is pandigital if it makes use of all the digits 1 to n exactly once; for example, the 5digit 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.
 2 years ago
What's this supposed to mean We shall say that an ndigit number is pandigital if it makes use of all the digits 1 to n exactly once; for example, the 5digit 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.

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experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0the 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

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0the sum of unique product seems to be 247882

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0am i missing something?

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.0well there are no examples where multiplier is 8 or 9

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0I tried all ... couldn't find one.

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0What'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"

azka.niazi
 2 years ago
Best ResponseYou've already chosen the best response.2was the list already provided?

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.1I think it means to add 5796+5346+5796+...

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.1And I dont think all the listed numbers are correct

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0the list was not provided. I wrote a program to compute the list.

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0i added up unique values 5796+5346+5796+... = 247882

azka.niazi
 2 years ago
Best ResponseYou've already chosen the best response.2if 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.

azka.niazi
 2 years ago
Best ResponseYou've already chosen the best response.2oh i see. but the list isn't correct. there are entries which can't be called a 1 through 9 pandigita  i think!

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0*pandigital looks like it i didn't check it manually.

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0looks like in need to edit my program.

azka.niazi
 2 years ago
Best ResponseYou've already chosen the best response.2oh right! "pandigital"...i copied the word! =)

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0this 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

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0Bingo!! help each other's with medals!!

azka.niazi
 2 years ago
Best ResponseYou've already chosen the best response.2lol! finally!! yeah, that seems right!

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.1@experimentX u use which programming language to write progrmas

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0nowdays i'm using matlab + mathematica ... I'm planning to learn python. besides that i know bunch of other languges.

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0better learn python ... it's serves multipurpose.

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.1Oh ya......... I have seen my friends writting program using python.... That looks good.

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0once you learn one language ... rest of language have similar structure.

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.1Well i know as u know Qbasic that we learn at school...... and can also use Visual Basic....... But python looks very different.

experimentX
 2 years ago
Best ResponseYou've already chosen the best response.0once you get your hands on it ... probably programming python is lot faster than those in Basic or VB

sauravshakya
 2 years ago
Best ResponseYou've already chosen the best response.1Well thanx I will try it.
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