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Except for 5, all of them have more than two factors.
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∙ 8y ago
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Why numbers with a five in the ones place are not prime numbers?
All but the number five are multiples of 5.
Are numbers that have 2 in the ones place composite numbers?
Yes except for 2 on its own which is the only even prime number
Is 9 a prime number when it is in the ones place?
nine is not a prime number
Is all numbers that have a 2 in ones place is a composite?
Yes except for 2 on its own which is the only even prime number.
Is it true or false that all numbers with a 0 in the ones' place are composite numbers?
It is true (as long as there are no decimal places after the ones place) because those numbers will always be divisible by 2, 5, and 10. With exception of the number zero which is neither prime nor composite.
Why numbers with a five in the ones place are not prime numbers?
All but the number five are multiples of 5.
Does a prime number have in the ones place 1 3 7 9?
The prime numbers are 3 and 7 but 1 is not considered to be a prime or a composite number
Are numbers that have 2 in the ones place composite numbers?
Yes except for 2 on its own which is the only even prime number
Is 9 a prime number when it is in the ones place?
nine is not a prime number
Can a whole number with zero in the ones place be prime?
No, all numbers with a zero in the one's place are divisible by at least 1, themselves, and 2, which means they cannot be prime.
Other than5 are there any prime numbers with 5 in the ones place?
No, any number with a 5 in one's place would be divisible by 5.
How can you tell 32 and 95 are not prime numbers without finding their factors?
32 is an even number (look at the ones place). The only even prime is 2. 95 has 5 as a factor (again look at the ones place). Multiples of 5 have a 0 or 5 in the ones place.That is how you figer out if 32 and 95 in not a prime number.
Are all numbers that have 2 in the ones place composite?
Yes except for 2 on its own which is the only even prime number
Is all numbers that have a 2 in ones place is a composite?
Yes except for 2 on its own which is the only even prime number.
Is it true or false that all numbers with a 0 in the ones' place are composite numbers?
It is true (as long as there are no decimal places after the ones place) because those numbers will always be divisible by 2, 5, and 10. With exception of the number zero which is neither prime nor composite.
How many positive prime numbers have a ones digit of 5?
Only one positive prime number has a 5 in the ones digit. That prime number is 5. All other numbers with a 5 in the ones digit are composite because they will be divisible by 5.
What numbers are relatively prime to 5?
Since 5 is a prime number, then any number, which is not a multiple of 5, is relatively prime with the number 5. You can determine if a number is a multiple of 5, by looking at the ones place digit. If it is a 0 or 5, and the number itself is not zero, then the number is a multiple of 5.
