Jawaban:
210
Penjelasan dengan langkah-langkah:
1 + 2 + 3 + 4 + 5 + ... + 20
Sn = n/2 × (n + 1)
Sn = 20/2 × (20 + 1)
Sn = 10 × 21
Sn = 210
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Jawaban:
210
Penjelasan dengan langkah-langkah:
1 + 2 + 3 + 4 + 5 + ... + 20
Sn = n/2 × (n + 1)
Sn = 20/2 × (20 + 1)
Sn = 10 × 21
Sn = 210