When n is divided by 5 the remainder is 3. What is the remainder when n^2 is divided by 5?	Choices:  A) 0  B) 1  C) 2  D) 3  E) 4

Rationale: n = 5 x + 3 , for some integer x n ^ 2 = ( 5 x + 3 ) ^ 2 = 5 y + 9 , for some integer y when we divide this by 5 , the remainder is 4 . the answer is e .
Answer: E