no 27 tolong donk serta caranya
Matematika
aldo652
Pertanyaan
no 27 tolong donk serta caranya
1 Jawaban
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1. Jawaban Anonyme
Sn = n/2 (2a + (n-1)b)
S12 = 12/2 (60 + (11)5)
= 6 (115)
= 690 kursi (B)