document.write( "Question 1195430: The first term of an AP is 3. Given that the sum of the first 6 terms is 48 and that the sum of all the terms is 168 .calculate the common difference,the number of terms in the AP and the last term \n" ); document.write( "

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\n" ); document.write( "The first term of an AP is 3. Given that the sum of the first 6 terms is 48 and that the sum of all the terms is 168 .calculate the common difference,the number of terms in the AP and the last term
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                                          Sum of an AP: \r\n" );
document.write( "Sum of this AP with its first 6 terms summing to 48: \r\n" );
document.write( "                                   Common difference, or \r\n" );
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document.write( "                                          Sum of an AP: \r\n" );
document.write( "       Sum of this AP with its terms summing to 168: \r\n" );
document.write( "                                                 (n - 12)(n + 14) = 0\r\n" );
document.write( "             Number of terms in series, or  n = 12  or  n = - 14 (ignore) \r\n" );
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document.write( "                                       Specific term of an AP: \r\n" );
document.write( "                                 Last term (12^th) of this AP: \r\n" );
document.write( "                       Last term (12^th) of this AP, or  a₁₂ = 25

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