Jawaban:
B
Penjelasan dengan langkah-langkah:
Un = U1 + (n - 1)b
U20 = 1 + (20 - 1)3
= 1 + 19 × 3
= 58
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Jawaban:
B
Penjelasan dengan langkah-langkah:
Un = U1 + (n - 1)b
U20 = 1 + (20 - 1)3
= 1 + 19 × 3
= 58