Question

numa pg dados a1=2,q=5 e an=1250, calcule o n​

Answer 1

An = a₁ * qⁿ⁻¹

1 250 = 2 * 5ⁿ⁻¹

5ⁿ⁻¹ = 1 250 / 2

5ⁿ⁻¹ = 625

5ⁿ⁻¹ = 5⁴

n - 1 = 4

n = 4 + 1

n = 5