Correct Answer: Option B

Explanation

sequence: -2, 4, -8, 16........{GP}

a = -2; r = \(\frac{4}{-2}\) = -2

nth term T_n = ar^n-1

T_n = (-2)(-2)^^n-1

T_n = (-2)^{1 + n - 1}

T_n = (-2)ⁿ

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