Jawaban:
240
Penjelasan dengan langkah-langkah:
U15 = n (n+1) = 15 (15+1) = 15 × 16 = 240
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Jawaban:
240
Penjelasan dengan langkah-langkah:
U15 = n (n+1) = 15 (15+1) = 15 × 16 = 240