Multiple choice

In the given number series, a term is wrong. Find the wrong term in the given wrong number series. 21, 42, 126, 620, 4410, 48510

  1. 126

  2. 4410

  3. 42

  4. 48510

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Checking patterns: 21×2=42, 42×3=126, 126×5=630 (but we have 620, error here), 630×7=4410, 4410×11=48510. The pattern uses consecutive prime numbers (2, 3, 5, 7, 11) as multipliers. 620 breaks this pattern - it should be 630. All other terms fit the pattern correctly.

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