Ответы на вопрос:
А₁ = 2, q = 3, an = 486an = а₁ * q ^ (n-1) 486 = 2 * 3 ^ (n - 1) 3 ^ (n - 1) = 486 : 2 3 ^ (n - 1) = 243 3 ^ (n - 1) = 3⁵ n - 1 = 5 n = 6
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