Multiple choice

Find the wrong number in the given number series given below. 4, 12, 42, 196, 1005, 6066, 42511

  1. 12

  2. 42

  3. 196

  4. 1005

  5. 6066
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Number series pattern: n×(n+1)+n. 4×2+2=10 (should be 12), 12×3+3=39 (should be 42), 42×4+4=172 (should be 196). After 196, pattern changes to n×(n+5)-n: 196×9-9=1755 (not 1005), 1005×11-11=11044 (not 6066). Multiple terms deviate from the pattern. 42 is marked as wrong but 50×3+3=153 (not 42). The pattern is inconsistent.

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