Question

Which of these numbers is prime?
Choose 1 answer:
Choose 1 answer:
(Choice A)
\[9\]
A
\[9\]
(Choice B, Checked)
\[37\]
B
\[37\]
(Choice C)
\[38\]
C
\[38\]
(Choice D)
\[65\]
D
\[65\]
(Choice E)
\[81\]
E
\[81\]

Answer 1

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Let's analyze each of the given numbers:

- **9**: Divisible by 1, 3, and 9 (not prime).
- **37**: Divisible only by 1 and 37 (prime).
- **38**: Divisible by 1, 2, 19, and 38 (not prime).
- **65**: Divisible by 1, 5, 13, and 65 (not prime).
- **81**: Divisible by 1, 3, 9, 27, and 81 (not prime).

From this analysis, the only number that is prime is:

**B: 37**.