Number series – differences increase by a fixed step of +123: 499, 622, 868, 1237, 1729, 2344, ? Use the linear growth in first differences to find the next term.

Difficulty: Medium

Correct Answer: 3082

Explanation:


Introduction / Context:
Some series grow with first differences themselves forming an arithmetic progression. Here, each new difference rises by +123, creating a predictable ladder.



Given Data / Assumptions:

  • Differences: 622−499=123, 868−622=246, 1237−868=369, 1729−1237=492, 2344−1729=615.


Concept / Approach:
Each step adds another 123 to the previous difference. Therefore the next difference is 615 + 123 = 738.



Step-by-Step Solution:

Next term = 2344 + 738 = 3082.


Verification / Alternative check:
Back-check: 3082 − 2344 = 738 fits the +123 ladder.



Why Other Options Are Wrong:

3205, 2959, 3462 do not produce the correct next difference of 738.


Common Pitfalls:
Missing the pattern in differences and attempting ratios, which are irregular here.



Final Answer:
3082

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