Jawab:
d
Penjelasan dengan langkah-langkah:
polanya:
1 + 3 + 5 + 7 + ... + 99
polanya un = 2n - 1
99 = 2n - 1
2n = 100
n = 50 suku
jadi
Sn = (50/2)(1 + (2n-1))
S50 = 50/2 (1 + 99) = 25 . 100 = 2.500
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Jawab:
d
Penjelasan dengan langkah-langkah:
polanya:
1 + 3 + 5 + 7 + ... + 99
polanya un = 2n - 1
99 = 2n - 1
2n = 100
n = 50 suku
jadi
Sn = (50/2)(1 + (2n-1))
S50 = 50/2 (1 + 99) = 25 . 100 = 2.500