Consider the following numbers :<br>1. 437<br>2. 797<br>3. 1073<br>How many of the above numbers are <strong>PRIME</strong>?
- A. Only one ✓
- B. Only two
- C. All three
- D. None
Correct Answer: A. Only one
Explanation
437 = 19 \times 23 and 1073 = 29 \times 37, so they are composite. Only 797 is not divisible by any prime up to \sqrt{797} \approx 28, making it the only prime number.
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