Student: If n is an integer, then the least possible value of |15 - 8n| is?\nOptions:\n(A) 0\n(B) 2\n(C) 1\n(D) 3\n(E) 5.
Another student: Let's say, hmmm...

User
|15 - 8n| represents the distance between 15 and 8n on the number line. Now, the distance will be minimized when 8n, which is multiple of 8, is closest to 15. Multiple of 8 which is closest to 15 is 16 (for n = 2), so the least distance is 1: |15 - 16| = 1. Final answer: (C).
Assistant