Find the perfect square numbers between 20 and 30.

A perfect square number is the product of an integer multiplied by itself. For instance, numbers like 1 (1×1), 4 (2×2), 9 (3×3), and so on are perfect squares.

To identify the perfect square numbers between 20 and 30, let's examine all perfect squares in order:

• 1 (1×1)
• 4 (2×2)
• 9 (3×3)
• 16 (4×4)
• 25 (5×5)
• 36 (6×6)
• 49 (7×7)

From the above list, the only perfect square that lies within the range of 20 to 30 is 25, as it is the square of 5 (5×5).

Therefore, the perfect square number between 20 to 30 is 25.

This concept is crucial for understanding the distribution of perfect squares and how they fit into specific ranges, such as 20 to 30 square. Remember, for a number to qualify as a perfect square, it must be the square of an integer.