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What are the composite numbers up to 20?
The composite numbers up to 20 are 4,6,8,9,12,14,15,16,18 and 20.
What are the square numbers up to one hundred?
1,4,9,16,25,36,49,64,81,100
What are the numbers are not prime?
Integers greater than 1, that are not prime numbers, are called composite numbers, because they are "made up of" more than one prime factor.
What are consecutive composite numbers?
4 ,6,8,9,10,12,14,15,16,18,20,21,24,25,26,28,30,34,35,36,38,40,44,46,48,49,50,54,56,58,60 ,64 66,68,69,70 up to so on
Are 21 36 31 87 62 23 29 45 and 51 composite or prime?
23, 29 and 31 are prime. The rest are composite.
Why are composite numbers called composite numbers?
To distinguish them from prime numbers. Composite means "made up of various parts or elements." Prime numbers have one and only one factor pair. Composite numbers have a various number of factor pairs, but always more than one.
What are the composite numbers up to 20?
The composite numbers up to 20 are 4,6,8,9,12,14,15,16,18 and 20.
How many composite numbers are there up to and including 30?
There are 18 composite numbers up to and including 30
What are the square numbers up to one hundred?
1,4,9,16,25,36,49,64,81,100
What composite numbers multiply up to 30?
No two (or more) composite numbers can multiply to 30.
How many composite numbers are there from 1 to 40?
Look up a table of prime numbers. All those numbers that are not prime, are composite - except 1, which is neither prime nor composite.
What are the 15 composite numbers greater than 50 less than 70?
I suggest you look up a table of prime numbers. Any integer treater than one that is not in the table of prime numbers is a composite number.
How do you explain in words how a number is composite?
A composite number is one that can be split up into smaller factors. It can be considered to be the product of two or more prime numbers.
Is the addition of two composite numbers also a composite number?
Not necessarily. For example 15 and 16 are composite numbers. They add to 31, which is a prime number. Similarly, the composite numbers 20 and 21 add up to 41, which is a prime number.
To find a composite number why divide by prime numbers?
You could try dividing by composite numbers but the number that you are testing is divisible by a composite number, then it will be divisible by a prime factor of that composite number and that prime factor will be smaller. It is always easier to work with smaller numbers.
What are prime numbers for?
So the composite numbers won't get all bunched up.
What 26 and30?
They are two composite numbers and they add up to 56 which is also a composite number
