Topic: Aptitude/Ability Test
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:
$7 \times 1 + 1 = 8$
$8 \times 2 + 2 = 18$
$18 \times 3 + 3 = 57$
$57 \times 4 + 4 = 228 + 4 = 232$ (The given number is 228, so this is wrong).
Let's verify with the next term: $232 \times 5 + 5 = 1160 + 5 = 1165$ (Matches the series).
$1165 \times 6 + 6 = 6996$ (Matches the series).
Hence, 228 is the incorrect number.