Multiple choice

Find the wrong term in the following series. 13 , 62 , 355 , 1416 , 4245 , 8488

  1. 8488

  2. 1416

  3. 355

  4. 4245

  5. 62

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The pattern is: previous term × (n+3) - (n-1) where n increases by 2 each time, starting with n=2. 13×5-3=62, 62×7-5=429 (not 355), 429×9-7=3854 (not 1416), etc. The term 62 is wrong because the actual pattern is ×(4+2n)-(?). Better pattern: 13×5-3=62, then it should be 62×7-5=429. Since 355 is given, check if 62 itself is wrong. If we start with 62, next should be 62×6-17=355. But then 355×4-4=1416. The multipliers and subtractions are inconsistent. The correct pattern starting from 13 would be: 13×5-3=62, 62×7-5=429, 429×9-7=3854... So 62 is the wrong term.