Multiple choice

Find the wrong number in the given series? $15, 28, 60, 120, 240$

  1. $60$
  2. $15$
  3. $28$
  4. $120$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Analyze the multiplication pattern: each term should be double the previous term (×2). 15×2=30, but the series shows 28. 30×2=60 (correct), 60×2=120 (correct), 120×2=240 (correct). The number 28 breaks this doubling pattern - it should be 30. Therefore, 28 is the wrong number in the series.

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