document.write( "Question 1210575: Finish the sequence 3. 6. 18 ___\r
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document.write( "which of these numbers is correct\r
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document.write( "84\r
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document.write( "60\r
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document.write( "72\r
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document.write( "30 \n" );
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Algebra.Com's Answer #853730 by math_tutor2020(3832) ![]() You can put this solution on YOUR website! \n" ); document.write( "This sequence could be geometric. \n" ); document.write( "To find out, divide adjacent terms \n" ); document.write( "term2/term1 = 6/3 = 2 \n" ); document.write( "term3/term2 = 18/6 = 3 \n" ); document.write( "The ratios we got were 2 and 3. \n" ); document.write( "We do not get the same ratio each time, so the sequence isn't geometric.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "But the pattern could be: multiply by 2, multiply by 3, multiply by 4, etc \n" ); document.write( "If so, then \n" ); document.write( "18*4 = 72 \n" ); document.write( "could be the next term.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Unfortunately sequence problems like this are very flawed. \n" ); document.write( "Check out this similar problem \n" ); document.write( "https://www.algebra.com/algebra/homework/Sequences-and-series/Sequences-and-series.faq.question.1195799.html \n" ); document.write( "On that link I try to find the next few terms in the sequence 1,2,4,... \n" ); document.write( "It turns out there are at least 3 different possible answers for that question. There may be infinitely many answers. \n" ); document.write( "Without knowing the actual rule to \"3, 6, 18, ...\" there's no way of knowing 100% what the next term could be. \n" ); document.write( " \n" ); document.write( " |