Multiple choice

The numbers in the series 3, 9, 27, __, 243, follow a pattern. What is the missing number?

  1. 30

  2. 60

  3. 81

  4. 90
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C Correct answer
AI explanation

The sequence follows a geometric progression where each term is multiplied by 3 to obtain the next term. Multiplying 3 by 3 gives 9, and multiplying 9 by 3 gives 27. Multiplying 27 by 3 yields 81, which is the missing number.

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