Multiple choice

What is the missing term in the following sequence? 1, 3, 9, ___, 81, 243.

  1. 27

  2. 23

  3. 18

  4. 15
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A Correct answer
Explanation

The sequence is powers of 3: 3^0, 3^1, 3^2, 3^3, 3^4, 3^5. 3^3 = 27.

AI explanation

The given sequence follows a geometric progression where each term is multiplied by 3 to get the next term. Multiplying the third term 9 by 3 gives the missing term as 27. You can verify this because 27 multiplied by 3 equals the sixth term 81. The missing term is 27.

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