August 2018 1 88 Report
1. Harga x dari 2 + 4 + 6 + ... + x = 930 adalah?
2. 2 + 6 + 10 + ... + 40 = x, harga x adalah?
3. Suku ke 10 dari barisan, 81,27,9,... adalah?
4. Jumlah 6 suku deret geometri 3 + 9 + 27 + ... adalah?
5. 328 + 164 + 82 + ... jumlah 4 suku pertamanya adalah...?

Tolong kalau bisa pakai cara yaa.. terims :)
-Aritmatika, geometri

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