Tip:A–D to answerE for explanationV for videoS to reveal answer
Find out the wrong number in the following series.
15, 16, 34, 105, 424, 2124, 12756
- A.
16
- B.
34
- C.
424
- D.
2124
(Correct Answer)
Explanation
Correct Option - 4
The logic is:
(15 × 1) + 1 = 16
(16 × 2) + 2 = 34
(34 × 3) + 3 = 105
(105 × 4) + 4 = 424
(424 × 5) + 5 = 2125 ≠ 2124
(2125 × 6) + 6 = 12756
Hence, ‘2124’ is the wrong term in the series.
Explanation
Correct Option - 4
The logic is:
(15 × 1) + 1 = 16
(16 × 2) + 2 = 34
(34 × 3) + 3 = 105
(105 × 4) + 4 = 424
(424 × 5) + 5 = 2125 ≠ 2124
(2125 × 6) + 6 = 12756
Hence, ‘2124’ is the wrong term in the series.
