Lê Quốc Trần Anh Coordinator
26/07/2018 at 01:38-
Tôn Thất Khắc Trịnh 27/07/2018 at 04:37Starting with 1, the first number formed is definitely going to be 51 being divisible by 17.
Lê Quốc Trần Anh selected this answer.
Then it's 85 divisible by 17.
Then it's 68 divisible by 17.
Now it's 46 divisible by 23.
And it's 34 divisible by 17.
And it's 23 divisible by 23.
And now it's 92 divisible by 23.
Here, it's 69 divisible by 23
And it's 46 divisible by 23
And it repeats...
SO the patter is always ...(92346)851 (The things in the parenthesis are repeating)
Since it's 2017 digits, the loop would end on the (2017-3) mod 5 = 4th number being 2
THE FIRST DIGIT IS 2