What should come in place of the question mark (?) in the given series?
123, 121, 117, 111, ?  93

Given: 123, 121, 117, 111, ?  93

Logic: The series is decreasing with consecutive even numbers (–2, –4, –6, –8, –10, ...)

123 – 121 = 2

121 – 117 = 4

117 – 111 = 6

6 + 2 = 8

111 – 8 = 103

Thus, the correct option is (a) 103.