document.write( "Question 843102: If p q is true and q is true, then p is neveralwayssometimes tr \n" ); document.write( "
Algebra.Com's Answer #507937 by Theo(13342)\"\" \"About 
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the symbol you were trying to show didn't show up.\r
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\n" ); document.write( "\n" ); document.write( "the following truth table should give you your answer, since it covers all the most common symbols that you may have meant.\r
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document.write( "p         q         p v q      p ^ q     p ---> q      p <---> q\r\n" );
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document.write( "T         T           T          T          T              T\r\n" );
document.write( "T         F           T          F          F              F\r\n" );
document.write( "F         T           T          F          T              F\r\n" );
document.write( "F         F           F          F          T              T\r\n" );
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\n" ); document.write( "\n" ); document.write( "the first 2 columns are p and q individual states (either true or false)
\n" ); document.write( "the third column is p or q, with the v symbolizing or.
\n" ); document.write( "the fourth column is p and q, with the ^ symbolizing and.
\n" ); document.write( "the fifth column is p implies q, with the ---> symbolizing implies.
\n" ); document.write( "the sixth column is q if and only if p, with the <---> symbolizing if and only if.\r
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\n" ); document.write( "\n" ); document.write( "the question was:\r
\n" ); document.write( "\n" ); document.write( "If p q is true and q is true, then p is never/always/sometimes true\r
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\n" ); document.write( "\n" ); document.write( "If or is indicated (v), then the answer is sometimes, because the or condition only requires that one of them be true.\r
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\n" ); document.write( "\n" ); document.write( "If and is indicated (^), then the answer is always, because the and condition requires both of them to be true.\r
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\n" ); document.write( "\n" ); document.write( "if implies is indicated (--->), then the answer is sometimes because the implies condition allows q to be true regardless of whether p is true or false.\r
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\n" ); document.write( "\n" ); document.write( "if if and only if is indicated (<--->), then the answer is always because the if and only condition requires both to be true.\r
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\n" ); document.write( "\n" ); document.write( "In the truth table, if you only look at the lines where Q is true, you may be able to spot this better.\r
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\n" ); document.write( "\n" ); document.write( "Only those lines are duplicated below:\r
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document.write( "p         q         p v q      p ^ q     p ---> q      p <---> q\r\n" );
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document.write( "T         T           T          T          T              T\r\n" );
document.write( "F         T           T          F          T              F\r\n" );
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\n" ); document.write( "\n" ); document.write( "you can see on the first line, that p is true and this allows all other conditions to be true.\r
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\n" ); document.write( "\n" ); document.write( "on the second line p is false.
\n" ); document.write( "the or condition is still true and the implies condition is still true.
\n" ); document.write( "the and condition and the if and only if condition, require p to also be true so they are false.\r
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