document.write( "Question 995915: Please help.
\n" ); document.write( "The sum of the integers between 10 and 65, inclusive, which are divisible by 2 and 3 is _____\r
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Algebra.Com's Answer #614554 by ikleyn(52788)\"\" \"About 
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\n" ); document.write( "These integers are  12, 18, 24, . . . , 60.\r
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\n" ); document.write( "\n" ); document.write( "It is arithmetic progression with the first term  12  and the difference  6;  the last term is  60. The number of the terms is \"%2860-12%29%2F6+%2B+1\" = \"48%2F6+%2B+1\" = 8 + 1 = 9.\r
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\n" ); document.write( "\n" ); document.write( "Use the formula for the sum of arithmetic progression\r
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\n" ); document.write( "\n" ); document.write( "S = \"%28%28a%5B1%5D%2Ba%5Bn%5D%29%2F2%29%2An\"\r
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\n" ); document.write( "\n" ); document.write( "(see the lesson  Arithmetic progressions  in this site).  It gives\r
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\n" ); document.write( "\n" ); document.write( "S = \"%2812+%2B+60%29%2F2%2A9\" = \"72%2F2%2A9\" = 36*9 = 324.\r
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