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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
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 all odd numbers prime why or why not?
NO. Not all odd numbers are prime like 9, 15, 21, 27,... because they have other factors aside from 1 and itself.
Is 15 and 27 relatively prime numbers?
No.
Are 27 and 15 prime numbers?
No, neither of them are.
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.
Which is a prime numbers 21 23 25 or 27?
It is 23
Is 21 and 27 prime and composite numbers?
A prime number has exactly two factors, 1 and the number itself. The factors of 21 are 1, 3, 7, and 21, and the factors of 27 are 1, 3, 9, and 27. Since 21 and 27 have more than 2 factors, they are composite numbers.
Which one of these numbers is a prime number 15 21 27 31 33?
It is 31 because it has only two factors which are itself and one
What are prime numbers 16 27 13 19 21?
13,19.
What is the prime number of 16 27 13 19 21?
They are 13 and 19 which are prime numbers
Which one of these numbers are prime 11 15 21 27 56?
the first one 11 others are not 15 = 3 x 5 21 = 3 x 7 27 = 3 x 9 56 = 4 x 14
