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27 is composite. 27 = 3 * 3 * 3 = 33
15 is composite. 15 = 3 * 5
21 is composite. 21 = 3 * 7
23 is a Prime number. It is only evenly divisible by itself and one.
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Is 13 15 17 19 21 23 25 27 29 prime numbers?
They are all prime numbers except for 15 21 25 and 27 which are composite numbers
Which is a prime numbers 21 23 25 or 27?
It is 23
Which of these is not a prime number 1 3 11 15 17 21 23 27 33 35 37 39 42 45 47 51 61 69 75 77 83?
15 21 33 35 42 45 75 77
Which of these is not a prime number 23 27 29 31?
27
What is the prime numbers between 21 and 33?
there are 3 prime numbers in between 21 and 33... they are 23,29, 31.
Is 15 17 19 21 23 25 27 29 and 31 prime or composite?
17, 19, 23, 29 and 31 are prime. 15, 21, 25 and 27 are composite..
Is 13 15 17 19 21 23 25 27 29 prime numbers?
They are all prime numbers except for 15 21 25 and 27 which are composite numbers
Which is a prime numbers 21 23 25 or 27?
It is 23
Is 9 11 13 15 17 19 21 23 25 27 29 prime numbers?
9, 15, 21, 25 and 27 aren't .. because they have more than two divisors.
Prime numbers between 21 and 30?
21, 23, 27 and 29
I need to know which pair of numbers in relatively prime 10 and 21 or 12 and 54 or 15 and 27 or 21 and 38?
hcf(10, 21) = 1 ⇒ 10 & 21 relatively prime hcf(12, 54) = 6 ⇒ 12 & 54 not relatively prime hcf(15, 27) = 3 ⇒ 15 & 27 not relatively prime hcf(21, 38) = 1 ⇒ 21 & 38 relatively prime
Are 3 5 15 21 27 prime numbers?
YES
Which one is prime out of 21 23 22 27?
The prime numbers are numbers greater than 1 that have no divisors other than 1 and themselves. Out of the numbers 21, 23, 22, and 27, only 23 is a prime number because it is only divisible by 1 and 23 itself. The other numbers have divisors other than 1 and themselves, making them composite numbers.
Which pair of number is relatively prime 10 and 21 12 and 54 15 and 27 21 and 39?
10 and 21
Which of these is not a prime number 1 3 11 15 17 21 23 27 33 35 37 39 42 45 47 51 61 69 75 77 83?
15 21 33 35 42 45 75 77
What number is prime 23 27 33 or 51?
23 is the prime number.
What is the range of 21 23 15 27 25 27 10 11 12?
Range = Maximum minus Minimum= 27 - 10 = 17
