+79 Suelyn counts up from 1 to 9, and then immediately counts down again to 1, and then back up to 9, and so on, alternately counting up and down.
Ex. (1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2,1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2,1...)
What is the 1000th integer on her list?
Attempts so far:
Okay. So I tried dividing 1000 by 9-which got me 111R1, then I remembered it's not like, "1,2,3,4,5,6,7,8,9,9,8,7,6,5,4,3,2,1..." But rather, "1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2,1..."
I accidentally added another nine... Is there any way to remove it?
+118687 Ex. (1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2, this is where the pattern restarts 1,2,3,4,5,6,7,8,9,8,7,6,5,4,3,2, 1...)
So there are 16 numbers before the pattern repeats.
so it will be 1000 mod 16
1000/16=62.5 = 62 remainder 8
the 8th number in the pattern is 8
so the 1000th digit is 8
