b1 = 88; q = 2; S5 = ?
Sn = b1 · (q^n - 1)/(q - 1)
n = 5
S5 = 88 · (2^5 - 1)/(2 - 1) = 88 · (32 - 1)/1 = 88 · 31 = 2728
ответ: 2728
b1 = 88; q = 2; S5 = ?
Sn = b1 · (q^n - 1)/(q - 1)
n = 5
S5 = 88 · (2^5 - 1)/(2 - 1) = 88 · (32 - 1)/1 = 88 · 31 = 2728
ответ: 2728