Question

Задание на фотографии ​

Answer 1

s1 = 1

s2 = 1

s3 = 1

s4 = 1 + 1 = 2

s5 = 1 + 2 = 3

s6 = 1 + 2 = 3

B = 3 + 2 + 3 = 8