X is a positive integer. When X + 1 is divided by 7, the remainder is 3. What is the remainder when N is divided by 7?  Choices:
A) 6
B) 5
C) 4
D) 3
E) 2
N+1 = 7a+3   i.e. N+1 = 10, 17, 24, 31, ... etc.   i.e. N = 9, 16, 23, 30, ... etc.   When N is divided by 7 Remainder is always 2   Answer: 2
<result>E</result>
X is a positive integer. When X + 1 is divided by 7, the remainder is 3. What is the remainder when N is divided by 7?