how to solve this

Question

how to solve this

anonymous · Answer

i think you'd definitely need to code this to do it efficiently (have a computer do it). its very interesting though, lol.

anonymous · Answer

they don't ask for that. they say to convert the number you get after subtracting into 2 numbers of ascending/descending ordered digits

anonymous · Answer

i think you're misinterpreting the problem. it is pretty simple, it just shouldn't be done by hand.

what is wrong with the problem?

raden · Answer

can we use the repeating number ?

raden · Answer

or all digits must be different ?

loser66 · Answer

it's really interesting problem. but sorry, I don't know.

loser66 · Answer

my logic is let the last result is  a,b,c,d and a.>b>c>d
so after rearrange in decreasing and increasing order I have abcd - dcba = 6174

loser66 · Answer

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