Correct option is B
5475, 1100, 225, 50, ?, 8, 6.6 in this series following patter is followed-
5475 → 5475 ÷ 5 = 1095 + 5 = 1100
1100 → 1100 ÷ 5 = 220 + 5 = 225
225 → 225 ÷ 5 = 45 + 5 = 50
50 → 50 ÷ 5 = 10 + 5 = 15
15 → 15 ÷ 5 = 3 + 5 = 8
8 → 8 ÷ 5 = 1.6 + 5 = 6.6
Therefore, the correct option is (b).