Number series – find the next two terms: 9, 16, 23, 30, 37, 44, 51, ?, ?

Difficulty: Easy

Correct Answer: 58 65

Explanation:


Introduction / Context:
This is a straightforward arithmetic progression check: constant differences signal the next terms directly.



Given Data / Assumptions:

  • Series: 9, 16, 23, 30, 37, 44, 51
  • We need the next two terms.
  • Look for a constant difference.


Concept / Approach:

Compute consecutive differences. If the difference is constant, keep adding it to extend the sequence.



Step-by-Step Solution:

Differences: 16−9 = 7, 23−16 = 7, …, 51−44 = 7.Hence, the common difference is 7.Next term: 51 + 7 = 58.Next term: 58 + 7 = 65.


Verification / Alternative check:

All original differences equal 7, confirming a pure arithmetic progression.



Why Other Options Are Wrong:

Any pair not matching +7 steps (like 59 66 or 58 66) violates the constant difference rule.


Common Pitfalls:

Mis-adding the difference or skipping a step; always add the common difference sequentially.


Final Answer:

58 65

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