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Q: What is the probability of rolling a prime number or non prime number?
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What is the probability of rolling a number greater than 18?

The answer depends on what you are rolling: three or more ordinary dice, or fewer dice with non-standard numbers on them, or a die with some other shape.


A number is chosen at random from the first 20 positive whole numbers What is the probability that it is not a prime number?

There are 12 composite (and 8 primes) in the first twenty whole numbers. So the probability of randomly choosing a non-prime is 12/20 or 60%.


Could a non-prime number be multiplied with a non-prime number result in a prime number?

No. Those two non-prime numbers will be factors, so it could not be prime.


Is the product of non prime and prime number prime?

no because your stupid


Does a non prime number divided by a non prime ever result in a prime number?

Well.... it actually depends. like 100 divided by 20 is 5 which is a prime. but 200 divided by 50 is four which is four and not a prime number.


What is a nonprime number?

A non prime number is a composite number.


Does a non prime number divided by a non prime ever result in a nonprime?

810/30=27


How can you be sure that they are prime numbers?

The only way to know if a number is prime or not is to try and divide it by every number and if non of them work then it is a prime number


What is a non prime number called?

Composite


A non negative number less than ten?

prime number


Which numbers do not appear in the prime factorization of a composite number?

Any number that isnot a prime,not a factor of the composite numbercannot appear in the prime factorisation of a composite number.


What is the only non prime non composite natural number?

1