Multiple choice

Find the next term of the series. $121, 225, 361, ?$

  1. $441$
  2. $484$
  3. $529$
  4. $729$
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C Correct answer
Explanation

The series is 11^2, 15^2, 19^2. The bases are 11, 15, 19 (increasing by 4). The next base is 19 + 4 = 23. 23^2 = 529.

AI explanation

Each term in the series is a perfect square of an odd number. The given terms are the squares of 11, 15, and 19, where the base numbers increase by 4. Following this pattern, the next base number is 23, and its square is 529.

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