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for any positive natural number n that has a prime factorization without the numbers {2,5}is it possible to multiply it by another number such that the result is a string of nines? note that the number of nines does not matter, what matters is that the result is just nines.
 one year ago
 one year ago
for any positive natural number n that has a prime factorization without the numbers {2,5}is it possible to multiply it by another number such that the result is a string of nines? note that the number of nines does not matter, what matters is that the result is just nines.
 one year ago
 one year ago

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inkyvoydBest ResponseYou've already chosen the best response.0
for 1  1*9=9 for 3: 3*3=9 for 7: 7*7=49 for 9: 9*1=9
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.0
for 11: 11*9=99 for 13: 13*?=????
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.0
The issue with this question is how to find such a given number
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.0
for 7: 7*142857=999999
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.0
Btw, I think I'll make this my problem of the day. It's simple math washed up a little so you don't recognize it.
 one year ago
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