Question
Without any calculation, find whether $441$ is a perfect square.
✓
Answer
The number may be a perfect square as the square numbers end with $0, 1, 4, 5, 6$ or $9.$
Given number $441$ has its digit $1.$ So it would be a perfect square number.
Given number $441$ has its digit $1.$ So it would be a perfect square number.
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