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9. Which of the following is a composite number?
OA. 19
B. 63
OC.0
OD.1

Sagot :

GinnyAnsweridn
To determine which of the given numbers is a composite number, we need to understand what a composite number is. A composite number is a natural number that has more than two distinct positive divisors. In other words, it is a number that can be divided by 1, itself, and at least one other number.

Let's examine each option:

Option A: 19
- The number 19 is a prime number, meaning it has no positive divisors other than 1 and itself.
- Therefore, 19 is not a composite number.

Option B: 63
- The number 63 has several divisors: 1, 3, 7, 9, 21, and 63.
- Since 63 has more than two distinct positive divisors, it is a composite number.

Option C: 0
- The number 0 is not considered a composite number because it has an infinite number of divisors.
- Therefore, 0 is not a composite number.

Option D: 1
- The number 1 has only one distinct positive divisor, which is itself.
- Therefore, 1 is not a composite number.

Given this analysis, the correct answer is:

B. 63
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