Number series – find the next term. Sequence: 1, 4, 9, 16, 25, 36, 49, ( ? )

Difficulty: Easy

Correct Answer: 64

Explanation:


Introduction / Context:
This sequence is the classic list of perfect squares in ascending order. Recognizing square numbers is a foundational skill in quantitative reasoning questions.



Given Data / Assumptions:

  • Given terms: 1, 4, 9, 16, 25, 36, 49
  • These are 1^2 through 7^2.


Concept / Approach:
Perfect squares follow n^2 for integer n. The next integer after 7 is 8, therefore the next square is 8^2.



Step-by-Step Solution:

Identify n values: 1, 2, 3, 4, 5, 6, 7.Compute next: 8^2 = 64.


Verification / Alternative check:
Confirm earlier values: 6^2 = 36 and 7^2 = 49. The progression is consistent, so 8^2 is the next logical term.



Why Other Options Are Wrong:

  • 54 and 56: Not perfect squares.
  • 81: That is 9^2, which would be the term after 64, not immediately next to 49 if stepping by single integers.


Common Pitfalls:
Confusing square numbers with triangular or other figurate numbers. Always check n^2 explicitly.



Final Answer:
64

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