Venn diagram number properties

The expression is .  Radicand is 25.

Square Root of a Number: If b² =a, then b is a square root of a.

         (The negative square root of radicand:)

Observe the Venn diagram:

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• The number 5 is a negative integer number (Z).
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• The sets of integers (Z) are subsets of rational number (Q).
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• All rational numbers (Q) are real numbers (R).
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The number belongs to Z, Q and R.