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Mapel : Matematika

Kelas : 9

Bab : Barisan dan Deret Bilangan
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1a] 1, 3, 9

Nilai a = 1

Maka rasio = 3/1 = 3 ✔

1b] 2, -6, 18

Nilai a = 2

Maka, rasio = -6/2 = -3 ✔