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Multiple choice

Find the wrong number among the given series. 23, 46, 138, 551, 2760

  1. 23

  2. 551

  3. 138

  4. 2760

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

The pattern is successive multiplications: 23×2=46, 46×3=138, 138×4=552 (not 551), 552×5=2760. The number 551 breaks this pattern - it should be 552.

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