Question:
I can't understand what is a perfect square
Answer:
A perfect square is a number that can be expressed as the product of two equal integers.
Example: 9 is a perfect square since it can be expressed as the product of two equal integers as
9 = 3*3
Similarly, 16, 25, 36 are the perfect square numbers.
16 = 4*4
25 = 5*5
36 = 6*6
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