Find the INCORRECT number in the series.
3, 6, 9, 13, 15, 18
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 13.
Given series: 3, 6, 9, 13, 15, 18
3 + 3 = 6, 6 + 3 = 9, 9 + 3 = 12 ≠ 13, 12 + 3 = 15, 15 + 3 = 18