To make a number a perfect square, find the next integer whose square is just greater than the number, then subtract the original number from this square. Here, adding 45 to 631. gives 676
What is the least number to be added to 631 to make it a perfect square?
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Question context
This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.