Topic: Aptitude
Find out the wrong number in the series.
7, 8, 18, 57, 228, 1165, 6996
- A. 7
- B. 8
- C. 6996
- D. 228
Answer: D. 228
Explanation: The pattern is: $7 \times 1 + 1 = 8$; $8 \times 2 + 2 = 18$; $18 \times 3 + 3 = 57$; $57 \times 4 + 4 = 232$. The given number is 228 instead of 232. Continuing the correct pattern: $232 \times 5 + 5 = 1165$, which matches the next term. Thus, 228 is incorrect.