seqeunce i n eed to knw the answer
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6 Answers

You cannot solve this sequence without previous two sequences in the same test. Look for a difference between corresponding sequence members of C and D sequences to figure this out. =)
3^n -n^2 - n
687 for nth term: 3^n-n^2-n

3n – n(n+1) its three sqaured by n


an = 3n - n2 - n 



591 is the 6th term.

Formula for nth term is 1-7n+15n²-8n³+2n⁴, where n≥0, so the first term is when n=0. The 6th term is when n=5. This formula gives 1363 as the 7th term.

Other formulas may also work because only a few terms have been given. These other formulas are likely to predict a different 6th term.

by Top Rated User (787k points)

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