Question 448561
<font face="Times New Roman" size="+2">


The first 5 perfect squares are:

1, 4, 9, 16, and 25.


You won't need the 6th one because it is larger than the largest of your choices.


Start with your first one, 13.


13 minus 1 is 12.  1 is a perfect square, 12 is not.
13 minus 4 is 9.  4 is a perfect square, 9 is a perfect square, so 13 is the sum of two perfect squares.  Eliminate this choice.


17 minus 1 is 16.  1 and 16 are perfect squares.  Eliminate choice.


Keep going until you find one that is not the sum of two perfect squares.  I can say that there is only one in the given list of numbers, but I wouldn't trust me if I were you -- check them all.


By the way, the word "can't" is properly spelled with an apostrophe.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
<div style="text-align:center"><a href="http://outcampaign.org/" target="_blank"><img src="http://cdn.cloudfiles.mosso.com/c116811/scarlet_A.png" border="0" alt="The Out Campaign: Scarlet Letter of Atheism" width="143" height="122" /></a></div>
</font>