Correct Answer & Explanation
Option B
• The series subtracts consecutive perfect squares starting from 1².
128 - 1² = 128 - 1 = 127
127 - 2² = 127 - 4 = 123
123 - 3² = 123 - 9 = 114
114 - 4² = 114 - 16 = 98
Missing term = 98 - 5² = 98 - 25 = 73