0
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.
Add your answer:
Earn +20 pts
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
Prime numbers between 21 and 30?
21, 23, 27 and 29
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
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
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.
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 pair of number is relatively prime 10 and 21 12 and 54 15 and 27 21 and 39?
10 and 21
What is the prime of numbers 21 22 23 24 25 26 27 28 29 30 and why?
The prime numbers among the given list are 23 and 29. A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. In this case, 23 and 29 have no divisors other than 1 and the numbers themselves, making them prime. The other numbers in the list have divisors other than 1 and themselves, so they are not prime.
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.
