Question

what's the solution?

Answer 1

Here your answer goes

Step :- 1

Given that nth term of the sequence is

$a_n} = (-1)^{n-1} n^{3}$

Step :- 2

Hence , the 7th term of the sequence be

$a_{7} = (-1)^{7-1} * 7^{3}$

⇒ $(-1)^{6} * 343$

⇒ 343

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