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What numbers between 20 and 40 are prime and multiplies of 5?
Multiples of 5 are not prime numbers except 5, so there are none. But, there are prime numbers between 20 and 40, like 23, 29, 31 and 37.
Which multiples will you have to check to find all the prime numbers less than 400?
Everything up to and including 20.
What numbers under 100 have at least one 2 at least and one 5 in their prime factorization?
They are the multiples of 10, from 10 to 90.
What numbers that are less than a hundred have proper factors that are only odd numbers?
Numbers that are prime can't be multiples of 10. Multiples of 10 can't be odd.
How many prime numbers on a dartboard?
There are eight prime numbers under 20.
What are the odd prime numbers under 20?
The odd prime numbers less than 20 are 3, 5, 7, 11, 13, 17, and 19.
Are there exactly 7 prime numbers under 20?
No, there are eight2,3,5,7,11,13,17,19note:always do ur homework
Is a prime number less than 20?
A prime number can be less than 20, but it is not a requirement that the number has to be under 20 to be considered prime. Here is a list of all the prime numbers under 20: 2, 3, 5, 7, 11, 13, 17, and 19 .
How do I explain math multiples to a child?
Multiples are what we get after multiplying a particular number by another number. For example, the multiples of 20 are all the numbers you get when you multiply 20 by other numbers.
What are Prime numbers 1-20?
These are the prime numbers 1-20 2,3,5,7,11,13,17,19
What prime number under 20 can be expressed as the sum of three different prime numbers?
They are: 3+5+11 = 19
Which numbers are multiples of 20?
20, 40, 60 and so on.
