Correct Answer & Explanation
Option B
Let us examine the differences between successive numbers:
19 + 9 = 28
28 + 11 = 39
39 + 13 = 52
52 + 15 = 67
67 + 17 = 84
84 + 19 = 103 (instead of 102)
• Therefore, 102 is the wrong number in the series.