Найдите там первые 5 членов геометрический прогрессии:b1=1/128b4=1/2

B=b*q
q=b : b
q = 1/2 : 1/128 = 1/2 * 128/1 = 64
q = 64
q = 64 = 4
q = 4 

b=1/128

b = b*q
b = 1/128 * 4 = 1/32

b = b*q
b = 1/32 * 4 = 1/8

b = 1/8 * 4 = 1/2

b = b*q
b=1/2*4 = 2

b = b*q
b = 2 * 4 =8

b = b*q
b = 8*4 = 32

Ответ:  1/128;  1/32;  1/8;  1/2; 2; 8;  32; ...