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Why are 9-15-21 not Prime numbers?
ANSWER: 9, 15, 21 are not prime numbers because these numbers have factors other than 1 and themselves. Therefore, 9, 15, 21 are composite numbersFactors of 9 other 1 and itself (9) : 3Factors of 15 other 1 and itself (15): 3, 5Factors of 21 other 1 and itself (21): 3, 7
What numbers do 9 and 21 go into?
multiples of 63
What are the first three odd composite numbers?
9, 15, 21
Are all odd numbers prime?
No, odd numbers such as 9, 15, 21, and 27 are not prime.
What numbers go into -315?
1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, -1, -3, -5, -7, -9, -15, -21, -35, -45, -63, -105, -315
What numbers go into 9 and 15 evenly?
1 and 3 go into both.
How many composite numbers are between 1 and 21?
12 numbers (including 21). The numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21.
What numbers will go in 63?
1, 3, 7, 9, 21, 63.
What numbers go in 63?
1, 3, 7, 9, 21, 63.
What numbers go into 63?
1, 3, 7, 9, 21 and 63.
What numbers go in to 63?
1, 3, 7, 9, 21, 63.
What are 6 numbers divisible by 3 but not 6?
3, 9, 15, 21, 27, 33
What are the odd composite numbers of the number thirty?
9, 15, 21, 25, 27, 33
What two numbers can be multiplied together to get 315?
63 & 5 21 & 15 9 & 35
What numbers are multiples of 3?
3 6 9 12 15 18 21 and so on
What numbers are both odd and composite?
That's an infinite list, started by 9, 15 and 21.
What are odd numbers which are composite?
That's an infinite list. 9, 15, 21, 25, 27...
What is a list of odd numbers that are not prime?
9, 15, 21, 25... just about any number that you can get from multiplication of whole numbers (besides one and itself).
What are the next three numbers after -18 -15 -12 -9 -6?
-3 0 3 then 6 9 12 15 18 21 and so on ...
Two numbers have a sum of 30 and a difference of 12 find the two numbers?
21 and 9 21 - 9 = 12 21+9 = 30
What is the GCF of the numbers 9 and 21?
The GCF of 9 and 21 is 3.
How many numbers between 1 and 24 are divisable by 3?
They are: 3 6 9 12 15 18 21 and 24 itself makes 8 of them
What are 7 consectutive odd numbers of seven?
9, 11, 13, 15, 17, 19, 21
What the answer to Odd numbers between 0 and 28 that are multiples of 3?
3, 9, 15, 21, 27
What numbers go into 63 evenly?
1, 3, 7, 9, 21, 63.
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