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Multiple choice

Find the wrong term in the following number series. $841, 1551, 2401, 3481, 4761, 6241$

  1. $841$
  2. $3481$
  3. $1551$
  4. $6241$
  5. $2401$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The series is squares of consecutive odd numbers ending in 9: 29² = 841, 39² = 1521, 49² = 2401, etc. 1551 is incorrect because 39² = 1521, not 1551.

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