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2/5 are prime, 8/15 are composite (and 1/15 is neither).

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Q: Write the natural numbers 1to15 what fraction of them are prime numbers what fraction of them are the composite number?
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Related questions

What makes prime numbers and composite numbers related?

Prime numbers are related with composite numbers as they are both natural numbers and real numbers and also every composite number is a product of prime numbers due to which they are related with each other.For example 24=[2] [2] [3] [2].Here 24 is a composite number,real number and natural number and 2,2,3,2 are prime numbers and also they are real and natural numbers


A natural number is a rational number?

Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction. All natural and whole numbers are rational.


A natural number that is not a rational number?

Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction. All natural and whole numbers are rational.


What is a natural number that is not a rational number?

Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction. All natural and whole numbers are rational.


Is 4 a composite number or prime number?

It's neither of them because -4 is not a natural number and prime or composite numbers are a subset of natural numbers i.e. only natural numbers can be classified as prime or composite numbers.


A rational number that is also a natural number?

20 is both rational and natural. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Is a fraction and a negative number natural numbers?

No.


Do you need to know all of the factors of a number in order to determine if it prime or composite?

All natural numbers (counting numbers) greater than one are either prime or composite. If divisible by only one and the number itself, it is prime; if divisible by other natural numbers, then is composite. One is the only natural number that is neither prime nor composite.


A natural number is always a rational number?

Yes. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.


Is there an infinite amount of prime and composite numbers?

Yes, there is an infinite amount of prime numbers. This has been proven by the ancient Greek mathematician Euclid. As for composite numbers, since there are infinitely many natural numbers, there must also be an infinite amount of composite numbers, as they are all the natural numbers that are not prime.


What number can be a rational number?

Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction. All natural and whole numbers are rational.


Can a rational number be a unrational number?

Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction. All natural and whole numbers are rational.