Multiple choice

Find the wrong term in the given series 9, 14, 40, 129, 536, 2705, 16260

  1. 14

  2. 40

  3. 536

  4. 9

  5. 129
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pattern: multiply by increasing integers and add consecutive numbers. 9×1+5=14, 14×2+12=40, 40×3+21=141, but given is 129. Checking further: 129×4+32=548 (given 536), 536×5+45=2705 (matches), 2705×6+60=16290 (given 16260). The pattern appears inconsistent or 40 is the error.

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