If n is a prime number greater than 19, what is the remainder when n^2 is divided by 12 ?	Answers:
A) 0	B) 1	C) 2	D) 3	E) 5
There are several algebraic ways to solve this question, but the easiest way is as follows:since we cannot have two correct answers just pick a prime greater than 19, square it and see what would be the remainder upon division of it by 12.   n=23 --&gt; n^2=529 --&gt; remainder upon division 529 by 12 is 1.   Answer: 1.
<result>B</result>
If n is a prime number greater than 19, what is the remainder when n^2 is divided by 12 ?