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Question

Find the missing term in the series: \(235, 271, 349, 385, ?, 499\)

This question was previously asked in
SSC Stenographer 2025 Question Paper (06-Aug-2025) Shift 2
The correct answer is
463

Understanding the Number Series Puzzle

The task is to find the missing term in the given number series: \(235, 271, 349, 385, ?, 499\). We need to identify the underlying pattern that connects these numbers.

Analyzing the Differences Between Terms

Let's examine the differences between consecutive numbers in the series to uncover the pattern:

  • First difference: \(271 - 235 = 36\)
  • Second difference: \(349 - 271 = 78\)
  • Third difference: \(385 - 349 = 36\)

Identifying the Series Pattern

The calculated differences are \(36, 78, 36\). This sequence suggests an alternating pattern of adding \(36\) and then adding \(78\). The pattern seems to be: \(+36, +78, +36, +78, +36, \ldots\)

Calculating the Missing Term

Applying the identified pattern, the step following \(385\) should be adding \(78\) to find the missing term:

Missing Term \(= 385 + 78\)

Missing Term \(= 463\)

Verifying the Pattern

To confirm our calculation, we check if the next step in the pattern (\(+36\)) applied to our found missing term (\(463\)) results in the final number (\(499\)) of the series:

Next Term \(= 463 + 36\)

Next Term \(= 499\)

The result matches the last term of the series, confirming that the pattern (\(+36, +78, +36, +78, +36\)) is correct and the missing term is indeed \(463\).

Final Answer

The missing term in the series \(235, 271, 349, 385, ?, 499\) is \(463\).

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