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All even numbers except 2 are?
All numbers that are multiples of 2. All numbers that are 2,4,6,8, or end in 2,4,6,8,0.
What is closed under subtraction?
The set of all integers; the set of all rational numbers; the set of all real numbers; the set of all complex numbers. Also their multiples - for example the set of all multiples of 2; the set of all multiples of 2.5; the set of all multiples of sqrt(17); the set of all multiples of 3 + 4i where i is the imaginary square root of -1.
What are the common multiples of 15 and 20?
60 and all its multiples
What do multiples of 5 end in?
All multiples of 5 are numbers ending in either 5 or 0.
What numbers can represent the side lengths of a right triangle?
Any three numbers, a, b, and c, which satisfy the equation a2 + b2 = c2 will form the sides of a right triangle. Some common values are 3, 4, 5 (and all multiples), 5, 12, 13 (and all multiples), and 7, 24, 25 (and all multiples).
Are all multiples of 3 composite?
Yes, all multiples of 3 are composite except for 3 itself which is a prime number.
Are all multiples of three all composite?
Yes except 3 itself which is a prime number
What All the multiples of 5?
They are ALL the number that end with 0 or 5 except for zero itself
How do you find prime numbers from 1-100?
1. write all the numbers from 1 to 100 2. cross off 1 as it is itself and it is not needed 3. except for 2 cross out all the multiples of 2 (the even numbers) 4. except for 3 cross out all the numbers that are a multiple of three(some would already cross off after you get rid of the even numbers except for 2) 5. except for 5-because 4 is crossed off- cross off all the multiples of 5 6. except for 7-because 6 is crossed off- cross off all the multiples of 7 7. repeat this until you get to 100-which would already be crossed off- and all the numbers that are not crossed off are the prime numbers prime numbers = numbers that divide by 1 and itself e.g. 2=2/1 /=divided by 1 and 2 only so is prime. if you don't know your multiples then count the amount e.g. 5 so count every 5 7 so count every 7 and so on hope i helped -Kevin mcclay yr 9 st annes academy Langley genius 2012 :D
How many composite numbers less than 100 will have a factor of 11?
All the multiples of 11 up to 100 except 11 itself which is a prime number
Which factors of 72 are multiples of its prime factors?
All of them except "1."
Are whole numbers multiples of one?
Yes, all except zero.
What are all the numbers that 85 can be divided into?
Itself and any multiples of it
How do you find out how many prime number from 1 to 10000?
Start counting from 2. For each number, if it has factors besides 1 and itself, then skip it; but if it doesn't have, then write it down. When you reach 10,000, you'll have the list, and you can count them. Here's another way to do it, which is probably easier: -- Write down all the numbers from 2 to 10,000. -- Start with 2. Cross all multiples of 2 off the list. -- Then go to 3. Cross all multiples of 3 off the list. -- 4 is gone ... it was a multiple of 2 ... so go on to 5. Cross all multiples of 5 off the list. -- 6 is gone ... it was a multiple of 2 and also of 3 ... so go on to 7. Cross all multiples of 7 off the list. -- 8, 9, and 10 are gone. Go on to 11. Cross all multiples of 11 off the list. -- Keep going like this, until you reach 5,000 . You'll have the list, and you can count them.
What r all the numbers divisible by 3?
Itself and any of its multiples
What are all the numbers that 16 can be divided by?
Any of its multiples including itself
What is divisible by 23?
All multiples of 23, which is an infinite number.
