Rewrite the following statement, with 'if ... , then' in five different ways conveying the same meaning:
If a natural number is even, then its square is even.

Explanation

To rewrite the statement "If a natural number is even, then its square is even" in five different ways while maintaining the same meaning, we can use logical equivalences and rephrasing. Here are the five different formulations:

1. If a natural number is even, then it follows that its square is even.

2. A natural number is even if and only if its square is even.

3. For a natural number to be even, it is necessary that its square is even.

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