Multiple choice

A series is given, with one or more number/letter missing. Choose the correct alternative from the given ones that will complete the series. $12, 30, 113, 557, ?, 23321$

  1. $3333$
  2. $3465$
  3. $4333$
  4. $3453$
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A Correct answer
Explanation

The series follows the pattern: ×3−6, ×4−7, ×5−8, ×6−9, ×7−10. Starting with 12: 12×3−6=30, 30×4−7=113, 113×5−8=557, 557×6−9=3333, and 3333×7−10=23321 (which matches the last term).

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