Question
Download Solution PDFWhich is not a prime number?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFFormula used:
A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
Calculation:
61: Divisors: 1, 61 (Prime)
47: Divisors: 1, 47 (Prime)
51: Divisors: 1, 3, 17, 51 (Not Prime)
59: Divisors: 1, 59 (Prime)
⇒ 51 is not a prime number.
∴ The correct answer is option 3.
Last updated on Apr 10, 2025
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