Which of the following is the product of two integers whose sum is 13?	Choose the correct choice from the following choices:	A) -42	B) -28	C) 12	D) 26	E) 32
I solved this Question like this,   Let the two integers are x,y   x+y=13 (Given)   xy=? (Needed)   instead of solving this algebraically, Test the Answer choices   C. 12   Do the factorization : (1,12)----&gt; There sum is 13 Bingo!!!!   So, my answer is C...   As the answer is in C, it took me very less time to answer the question. but i think this method is be simple and efficient.
<result>C</result>
Which of the following is the product of two integers whose sum is 13?