Author:
nbalow
Subject: Is N divisible by 7? Question about zero
Posted: Sat Mar 14, 2015 10:11 am (GMT -8)
Question that may have been answered before:
Is N divisible by 7?
1) N = x-y, where x and y are integers
2) x is divisible by 7, y is not
Now, I understand that 1 could be yes or no depending on what integers you put in for x and y so that's insufficient. 2 is obviously insufficient because it doesn't talk about N. Every post I have seen says c is the answer but my question is what if you put 0 (an integer) in for y? Does the answer become e? Is zero technically divisible by 7 (or any number for that matter) because the remainder is zero? I suppose if 0 is divisible by 7 then that wouldn't satisfy 2 as a value for y and then the answer would indeed be c.
Thanks in advance for the help!