document.write( "Question 1147255: the 12th term of an A.P is -41. given that the first term is 3,find the 20th term \n" ); document.write( "

Algebra.Com's Answer #768573 by ikleyn(52884) $\"\"$ $\"About$

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document.write( "The distance between  and  is given as 41+3 = 44.\r\n" );
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document.write( "There are 11 gaps between these terms, each gap is of the same length, equal to the modulus of the common difference.\r\n" );
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document.write( "So, the gap is  = 4 units, and the common difference is  -4 units.\r\n" );
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document.write( "Thus the 20-th term is  3 + 19*(-4) = -73.      ANSWER\r\n" );
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