document.write( "Question 1138236: an amphitheater has 23 seats in the front row, 25 in the second, 27 in the third, and so on, for 24 rows\r
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\n" ); document.write( "an amphitheater has 23 seats in the front row, 25 in the second, 27 in the third, and so on, for 24 rows\r
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Sum of an A.P.: 
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document.write( "Sum of THIS A.P.:  
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document.write( "ACCEPT no other answer. \n" );
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