document.write( "Question 338592: A “simple square” is any integer greater than 1 that has only three positive integer factors—itself,its square root, and 1.
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Algebra.Com's Answer #242687 by Edwin McCravy(20055) $\"\"$ $\"About$

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A. 121 B. 100 C. 81 D. 64 E. 33
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document.write( "121 has only the factors 1, 11 (itself), and its square root, 11.  \r\n" );
document.write( "So that's the correct answer.\r\n" );
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document.write( "100 has factors 1,2,4,5,10,20,25,50, and 100. So that's not it.\r\n" );
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document.write( "81 has factors 1,3,9,27, and 81, so that's not it.\r\n" );
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document.write( "64, has factors 1,2,4,8,16,32, and 64, so that's not it.\r\n" );
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document.write( "33 isn't even a square at all, and has factors 1,3,11, and 33, so that's\r\n" );
document.write( "not it.\r\n" );
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document.write( "Edwin

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