document.write( "Question 339036: For which of the following values of N is 3N – 1 not a prime number?\r
\n" ); document.write( "\n" ); document.write( "(a) 1 (b) 2 (c) 3 (d) 4 (e) 6
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Algebra.Com's Answer #243374 by nyc_function(2741)\"\" \"About 
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A prime number can be divided, without a remainder, only by itself and by 1. For example, 17 can be divided only by 17 and by 1.
\n" ); document.write( "The only even prime number is 2. All other even numbers can be divided by 2. \r
\n" ); document.write( "\n" ); document.write( "We must replace N by every number on the list to find the one that does not yield a prime number. \r
\n" ); document.write( "\n" ); document.write( "Let N = 1, 2, 3, 4 and 6 individually in the given expression and simplify.
\n" ); document.write( "3N - 1
\n" ); document.write( "3(1) - 1 = 3 - 1 = 2...That's not it.
\n" ); document.write( "3N - 1
\n" ); document.write( "3(2) - 1 = 6 - 1 = 5...That's not it.
\n" ); document.write( "3N - 1
\n" ); document.write( "3(3) - 1 = 9 - 1 = 8...This is it! There is no need to go further with the process.
\n" ); document.write( "Understood?
\n" ); document.write( "The answer is CHOICE (C).
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