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Is 15 prime or composite?
15 is a composite number because it has more than two factors. Its factors are 1, 3, 5, and 15.15 is a composite number as it is divisible by 1, 3, 5 and 15.composite. 3*5=1515 is a composite number because it has more than 2 factors
Write the natural numbers 1to15 what fraction of them are prime numbers what fraction of them are the composite number?
2/5 are prime, 8/15 are composite (and 1/15 is neither).
How do you find a composite number?
To find a composite number, think of two numbers that can be multiplied to equal that number. For example, 15 is a composite number because its factors are 1, 3, 5 and 15. For a number to be composite, it should have more than two factors.To know 15 is a composite number, know:1 x 15=153 x 5 =15All composite numbers have more than two factors whereas prime numbers have only two factors.
What are all the odd composite numbers from 1 to 20?
9 and 15 only.
Composite numbers between 15 and 25?
Composite numbers are positive integers greater than 1 that have more than two factors. Between 15 and 25, the composite numbers are 16, 18, 20, 21, 22, 24. These numbers can be divided evenly by factors other than 1 and themselves, making them composite.
