Are the square roots of all positive integers irrational? If not, give an example of the square root of a number that is a rational number.

Explanation

To determine whether the square roots of all positive integers are irrational, we can follow these steps:

### Step 1: Understand the question
The question asks if the square roots of all positive integers are irrational. We need to evaluate this statement and provide an example if it is false.

### Step 2: Analyze the statement
The statement claims that all square roots of positive integers are irrational. This means we need to find out if there are any positive integers whose square roots are rational.

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