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Squares and Square Roots — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSSquares and Square Roots1 Mark
Question
Without doing any calculation, find the number which are surely not perfect squares.
441
✓

Answer

We know that the numbers end with $2,3,7$ or 8 , can never be a perfect square.
In a number 441, end digit is 1 , which is not one of 2 , 3,7 or 8 . So, it can be a perfect square.

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